Here, theScore's Mike Alessandrini and Dan Wilkins break down the top prospects in the upcoming 2019 NFL Draft with position-by-position rankings and an overall top 50 big board.

Top 50

QB | RB | WR | TE | OT | iOL

EDGE | DL | LB | CB | S

Wide receivers

1. Marquise Brown

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School: Oklahoma

Height: 5-9

Weight: 166 lbs

Strengths

Incredibly explosive

Absolute burner with speed that's nearly impossible to cover one-on-one

Polished route-running ability

Creates separation with impressive fakes at top of his routes

Tracks deep ball well and has savvy to lean into defender before separating for catch

Plays bigger than he is with ability in contested-catch situations

Breakaway speed and short-area quickness make him a nightmare after the catch

Active blocker in running game

Weaknesses

Lacks ideal height for a No. 1 receiver

Too many focus drops

Recovering from foot injury that forced him to miss pre-draft workouts

Bottom line

Brown's ability as a deep-ball receiver, winning with speed and ball-tracking ability despite his size limitations, has been compared to DeSean Jackson. But he's also capable of making plays at the short and intermediate levels of the field and taking those the distance; perhaps the better comparison is Tyreek Hill. "Hollywood," a cousin of Antonio Brown, gets the No. 1 spot on our receiver rankings because his skill set makes his size largely irrelevant. Players like this just don't come around very often.

2. D.K. Metcalf

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School: Ole Miss

Height: 6-4

Weight: 229 lbs

Strengths

Unique size and rare athleticism for his position

Elite speed for size that at times leave defenders helpless

Home-run threat on every play

Excellent burst off line of scrimmage

Able to high-point ball and make contested catches

Imposing presence on cornerbacks due to frame and skill set

Dangerous on vertical routes

A menace to tackle in open field

Weaknesses

Two season-ending injuries in college (foot in 2016, neck in 2018)

Needs to refine route running - ran mostly vertical tree in college

Average footwork gets him stuck versus cornerbacks at times

Should've been more productive given his high-level physical traits

A few focus drops show up on tape

Bottom line

Metcalf is one of the most physically imposing wide-receiver prospects we've ever seen, combining ridiculous speed and a monstrous frame. He's learning the nuances of the position after running a limited route tree at Ole Miss, but he'll still be an immediate matchup nightmare in the NFL. Metcalf's change-of-direction deficiencies are overblown, as he displays enough athletic ability there on tape. If cornerbacks don't get their hands on the wideout, he's a threat to score on every play. Metcalf is raw but has one of the highest ceilings in this entire draft.

3. Hakeem Butler

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School: Iowa State

Height: 6-5

Weight: 227 lbs

Strengths

Big-play machine who can line up anywhere

Size, physicality, and high-point ability make winning over a defender look easy

Tracks ball well and has the body control to make impressive adjustments

Advanced route-runner with a feel for nuance and positioning to create separation

Massive catch radius

Has long speed to stretch defenses vertically

Physicality shows up with bully-running mentality after catch

Active and physical blocker in running game

Weaknesses

Focus drops present an issue that needs to be corrected at next level

Not especially quick in and out of his breaks

Bottom line

Butler does it all. Drops are the only major knock on his game, but they're more a result of focus than an indicator of ability. And drops really aren't all that concerning considering the kinds of plays he makes on a regular basis. Butler is a size-speed freak who dominates at all levels of the field, and his physicality shows up in all phases of the offensive game. He's everything teams should be looking for in a No. 1 receiver.

4. A.J. Brown

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School: Ole Miss

Height: 6-1

Weight: 226 lbs

Strengths

Very productive collegiate career

Soft hands - makes a number of tough catches look easy

Good size and physicality allow him to line up anywhere

Matchup nightmare as a slot receiver

Very elusive after catch

Solid, crafty route-runner who possesses great agility

Can easily separate versus off coverage

Weaknesses

Has been bested by top-tier press coverage

Doesn't possess great long speed or initial burst

Least productive games came against top competition

Bottom line

Brown is a solid early-round prospect who could find instant success in the NFL. He likely fits best in a big slot receiver role as a middle-of-the-field target. Brown may have some athletic limitations in the pros, but he's a refined route-runner that beats defenses in a variety of ways. He's a high-level chain mover that's dangerous with the ball in his hands and can be an occasional red-zone threat. With few weaknesses in his game, Brown's floor as a prospect is among the highest in this receiver class.

5. N'Keal Harry

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School: Arizona State

Height: 6-2

Weight: 228 lbs

Strengths

Big-bodied receiver who's very difficult to tackle in open field

Has excellent body control both after the catch and on contested targets

Easily overpowered smaller cornerbacks during routes

Very good short-area quickness for his size

Made a number of "wow" plays on tape

Excellent running slants

Technical route-runner that uses arm-over technique to separate

Legitimate red-zone threat

Weaknesses

Loses a bit of burst/speed in and out of breaks

Made a number of incredible catches, but also had a few disappointing drops

Doesn't beat press coverage as often as he should

Has reversed field and ran in opposite direction a number of times after the catch - may not work as effectively in the NFL

Bottom line

Harry is a physically imposing receiver who moves very well for his size. He's a scheme-versatile prospect who projects as a classic X receiver or in a big slot role. Concerns over his speed and athleticism were silenced after an excellent combine. Harry's route running - particularly his feet - needs a bit of fine tuning, but the first-team All-Pac-12 wideout has a number of high-level traits to develop into a potent offensive weapon.

6. J.J. Arcega-Whiteside

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School: Stanford

Height: 6-2

Weight: 225 lbs

Strengths

Contested-catch machine, boxing out and high-pointing ball to make play after play

Fights through contact to maintain positioning and get hands on ball

Strong hands and massive catch radius

Great release at line with footwork to beat press

Can sink hips at top of his route and quickly get into a break

Savvy route-runner who sets up defenders and creates separation with nuanced fakes

Physicality and positioning draws plenty of flags from defenders trying to recover

Effective blocker in running game

Weaknesses

Lacks quickness coming out of his breaks

Doesn’t offer much in terms of playmaking ability after catch

Didn’t run an extensive route tree in college

Bottom line

Arcega-Whiteside is a fascinating prospect. The dominance in contested-catch situations is, of course, his calling card. When the ball goes up, it's his - he makes it look that easy. But he's also a better athlete than some would have expected, running a 4.49 40-time at his pro day, and he's demonstrated some nuance both with his release and in his routes that help to create separation. Arcega-Whiteside seems destined to be picked at some point on Day 2 and could end up proving to be a steal.

7. Terry McLaurin

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School: Ohio State

Height: 6-0

Weight: 208 lbs

Strengths

Excellent route runner with a combination of toughness and lightning-quick feet

In control of body and feet along sideline

Fantastic release off line of scrimmage

Tracks ball well and adjusts to throws

Excellent pre-draft process - shined at combine and Pro Day

Blazing speed (ran 40-yard dash in 4.35 seconds)

Ability to dominate press coverage

Plenty of special teams experience

Uses body well to shield defensive backs

Weaknesses

Wasn't top target in a balanced Buckeyes offense - career-high 701 yards in 2018

Burst/acceleration doesn't stand out

Below-average catch radius

Doesn't make defenders miss after catch

Bottom line

McLaurin is a fascinating prospect who has seen his draft stock soar in recent months. He wasn't overly productive at Ohio State but flashed excellent route-running abilities and is a legitimate deep threat. McLaurin isn't the biggest receiver, but high quick feet, deep speed, and ability to track the ball translates extremely well in the pros. He could find instant success as a Z receiver (lining up off the line of scrimmage) on a team that utilizes his skill set.

8. Deebo Samuel

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School: South Carolina

Height: 5-11

Weight: 214 lbs

Strengths

Versatile offensive weapon who can beat defenses in many ways

Elusive playmaker with the ball in his hands

Defenses must scheme against him in red zone

Quick and smooth route runner

Explosive and gets to top gear quickly

Short-area quickness helps him avoid jams at line of scrimmage

Not biggest receiver but his physicality is off charts

Excellent release versus press coverage

Weaknesses

Battled injuries in college

Not an experienced or productive deep threat

Likely not built for No. 1 receiver role

Doesn't win many contested catches

Bottom line

Samuel is a pro-ready NFL weapon that fits perfectly in the modern game. He's a space player with incredible versatility and proficient separation skills. When Samuel was healthy in college, few defensive backs could stop him. The All-American thrives in many important phases of the game. He may not possess elite size, deep speed, or jump-ball prowess, but he can be an excellent No. 2 receiver if offenses correctly scheme the ball into his hands.

9. Andy Isabella

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School: Massachusetts

Height: 5-9

Weight: 188 lbs

Strengths

Incredibly productive slot receiver who dominates middle of field

Quickness and advanced route running make him a nightmare to cover out of slot

Explosiveness shows up with quickness in and out of his breaks

Outstanding fakes at top of his route to create separation

Traits also translate to effectiveness in vertical game, where he tracks ball well

Extremely elusive after catch

Works back to quarterback when he breaks pocket to buy time

Willing blocker in running game

Weaknesses

Size will limit him to a slot role in the NFL

Small catch radius

Won’t offer much of anything in contested catch situations

Played mostly against low-level competition

Bottom line

Isabella has the potential to be a top playmaker in today's NFL. Size will never allow him to become that prototypical No. 1 target on the outside, but with three-receiver sets effectively having become the base personnel grouping, what team couldn't use a player capable of dominating the middle of the field? Isabella has a combination of athleticism, route running, and ability after the catch, and he also has the long speed to stretch the defense vertically.

10. Riley Ridley

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School: Georgia

Height: 6-1

Weight: 199 lbs

Strengths

Advanced route-runner with subtle nuances that help him separate

Very good ball skills - makes many contested catches look easy

Excellent balance/body control on sideline targets

Good hands

Tough, competitive player who runs aggressively after the catch

Very good feel for soft spots in zone coverage

Dangerous when given free release off line of scrimmage

Weaknesses

Lacks long speed and isn't a deep threat

Feet are often slow which limits burst/acceleration

Struggles with release at times versus press coverage

Poor collegiate production - 559 yards in 2018 was career high

Bottom line

Ridley is one of the top route-runners in his class, which could lead to early NFL contributions. His body control and soft hands will likely make the former Bulldog a hot commodity on the draft's second day. Ridley doesn't come without limitations. He profiles as a solid possession receiver due to his lack of athleticism, breakaway speed, and elusiveness after the catch. He has every chance to be a mighty good secondary option, though.

11. Miles Boykin

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School: Notre Dame

Height: 6-4

Weight: 222 lbs

Strengths

Combines big frame with an elite and rare athletic profile

Freakish levels of explosiveness and short-area quickness for a player of his size

Polished and fluid route-runner who can line up at any receiver spot

Explosiveness to eat up cushion against off coverage and release moves to beat press

Creates separation with route nuance and quickness in and out of his breaks

Strong hands and a massive catch radius

Wins contested catch situations with size, body control, and ability to high-point

Complements threat in vertical game with ability to make plays on back-shoulder throws

Fantastic run-blocker either when taking his man or cracking down inside

Weaknesses

Lacks high-end production to match his traits

Athleticism never translated to any sort of consistent impact after catch

Play speed doesn’t always seem to match impressive timed speed

Bottom line

Production is a significant part of the equation when evaluating prospects, so it's understandable that Boykin is flying under the radar. But everything about his skill set screams high-ceiling receiver. He could end up leading the list of players who outperform their draft position. The Notre Dame product flashed plenty of big-play potential in his limited opportunities, and the athletic profile he put together at the combine - an elite combination of speed, explosiveness, and short-area quickness - is downright scary for his size.

12. Parris Campbell

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School: Ohio State

Height: 6-0

Weight: 205 lbs

Strengths

Offensive weapon who excels in space

High football IQ - understands matchups and consistently locates soft spots in zone coverage

Can separate with ease due to blazing speed

Versatile and productive as a slot receiver

Elusive and changes direction very well

Burner who stretches defenses

Unstoppable on drag routes

Able to make tacklers miss in open field

Weaknesses

Route-running precision has grown each year, but still needs fine-tuning

Loses separation ability when knocked off route

Limited route tree in college

Had a few too many drops over last two seasons

Doesn't make many catches in traffic

Inexperienced versus press coverage

Bottom line

Campbell is a Swiss Army knife offensive weapon with fluid athleticism and playmaking ability. The former Buckeye standout has the versatility to line up as a speedy Z receiver or intriguing slot weapon in the pros. He's not a player best suited for contact, and it'll be up to the league's brightest offensive minds to scheme the ball into his hands to receive his full value. They won't be sorry.

13. Kelvin Harmon

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School: NC State

Height: 6-3

Weight: 221 lbs

Strengths

Wins with size, physicality, and strong hands at the catch point

Tracks the deep ball well and makes subtle moves to separate before catch

Good body control and adjustments to make plays on back-shoulder throws

Fights through contact to continue route and get to ball

Weaknesses

Underwhelming athletic profile may cap big-play ability at next level

Lacks long speed to challenge defenses vertically

Doesn’t have quickness out of breaks to create separation

Lined up exclusively on right side of field

Bottom line

Harmon was getting plenty of buzz until some disappointing athletic scores quickly saw the hype fade. The lack of top-end speed limits his big-play upside, and he's not particularly quick in and out of his breaks, but he still offers value with his ability to physically dominate small defensive backs.

14. Emanuel Hall

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School: Missouri

Height: 6-2

Weight: 201 lbs

Strengths

Explosive athlete with impressive burst and long speed

Incredibly productive in the vertical passing game, averaging 22.5 yards per carry in 2018

Demonstrates body control to make adjustments in air

Rare athleticism allows him to pick up yards after catch

Weaknesses

Was mostly limited to a vertical route tree

Overall production less than ideal for a top receiver prospect

Needs to improve drop rate

Bottom line

At this stage in his development, Hall is something of a one-trick pony with his ability to take the top off the defense. He certainly has that trick mastered, though. Hall will enter the league as a deep-threat specialist with the athleticism and after-the-catch upside to develop into a more well-rounded threat on the outside.

15. DaMarkus Lodge

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School: Ole Miss

Height: 6-2

Weight: 202 lbs

Strengths

Good size and frame

Impressive first-step off line of scrimmage - can separate quickly

Excellent body control along sideline

Made a number of contested catches over last two seasons

Can contribute as a blocker in run game

Consistently beats zone coverage

Experienced in vertical route tree

Weaknesses

May not possess enough long speed to be consistent deep threat

Locked up by stout man-coverage cornerbacks

Drops are his biggest issue - 16 over last two seasons

Limited route tree at Ole Miss

Not an explosive athlete and not particularly agile

Bottom line

Lodge is a pro-ready receiver who possesses good size and a natural release off the snap. He has some athletic limitations, but consistently made splash plays with the Rebels. Though he struggles with drops and must improve his ability to separate, Lodge profiles as a high-floor X receiver who is best utilized along the boundary.

Other notable prospects

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Jalen Hurd (Baylor)

Mecole Hardman (Georgia)

Antoine Wesley (Texas Tech)

Stanley Morgan Jr. (Nebraska)

Hunter Renfrow (Clemson)

Top 50

QB | RB | WR | TE | OT | iOL

EDGE | DL | LB | CB | S