What is #CFBrank?

#CFBrank is the Twitter hashtag to use if you want to get involved in the discussion or just follow along.

How did we rank the players?

We asked 43 of ESPN's college football writers, editors and analysts to rate players on a scale of 0-10 based on their expected contributions for the 2015 season.

Full player rankings:

1-10 | 11-20 | 21-30 | 31-40 | 41-50 | 51-60 | 61-70 | 71-80 | 81-90 | 91-100

Top 10 Players

1. Joey Bosa

Ohio State Buckeyes

Junior | Defensive end

Score: 9.67

The 2014 Big Ten Defensive Player of the Year registered 13.5 sacks, collected 21 tackles for loss and turned a shrug emoji into a signature celebration move. All as a true sophomore. The ceiling for this already dominant pass-rusher is so immense that he could be the first pick in next year's NFL draft. That's nothing to shrug at.

T-2. Ezekiel Elliott

Ohio State Buckeyes

Junior | Running back

Score: 9.26

As a sophomore, Elliott burst into the national consciousness with three jaw-dropping postseason performances: 220 rushing yards in the Big Ten title game, 230 rushing yards vs. Alabama in the Sugar Bowl and 246 rushing yards (plus four TDs) in the national title game win over Oregon. He finished with 1,878 rushing yards for the season and is an early favorite for the 2015 Heisman Trophy.

T-2. Scooby Wright

Arizona Wildcats

Junior | Linebacker

Score: 9.26

The winner of almost every major defensive award last season, Wright redefined the middle linebacker position by tallying huge sack and tackles for loss numbers, which are usually reserved for outside linebackers and edge rushers. Besides leading the nation with 163 total stops (11.6 per game), he also notched 14 solo sacks and led the country with 29 tackles for a loss while helping Arizona to the Pac-12 South title and a spot in the Fiesta Bowl. He also showed his nose for the ball by leading the league with six fumbles recovered.

4. Vernon Hargreaves III

Florida Gators

Junior | Cornerback

Score: 9.21

Already a two-time All-SEC pick and an All-American last season, Hargreaves could make a strong case as the nation's top cover corner. He's instinctive and does nearly everything at a high level. Should he leave Gainesville after this season, most NFL draft analysts view Hargreaves as a high first-round pick.

5. Trevone Boykin

TCU Horned Frogs

Senior | Quarterback

Score: 9.19

TCU has the look of a playoff contender, and Boykin is the biggest reason why. And coming off a season in which he finished fourth in the Heisman voting, Boykin could be even more lethal in 2015, given last year was his first as a full-time starter. He'll have plenty of firepower around him again, too; the Horned Frogs return nine other offensive starters, including Boykin's top three receivers from last season.

6. Nick Chubb

Georgia Bulldogs

Sophomore | Running back

Score: 9.09

No Todd Gurley, no problem. That was the case last season when Georgia true freshman Chubb took over for the suspended superstar. It wasn't until Game 6 that Chubb took over as the Bulldogs' feature back, but he finished the season with a whopping 1,547 rushing yards and 16 total touchdowns. He is part of a deep backfield, but those numbers might rise in a full season as Georgia's No. 1 option.

7. Leonard Fournette

LSU Tigers

Sophomore | Running back

Score: 8.63

It took a few games, but the Class of 2014's No. 1 recruit eventually displayed the potential that LSU fans had expected all along. The turning point was his 140-yard, two-touchdown effort in a midseason win at Florida. Fournette set an LSU freshman rushing record with 1,034 yards and capped the season with a ridiculous performance against Notre Dame, rushing for 143 yards and two TDs and returning a kickoff 100 yards for another touchdown.

8. Shilique Calhoun

Michigan State Spartans

Senior | Defensive end

Score: 8.56

Spartans fans cheered -- and opposing quarterbacks groaned -- when Calhoun decided to return for his senior season. The two-time second-team All-American has 16.5 career sacks and has provided an anchor for Michigan State's nearly impenetrable defense. He's the rare defensive end who's also a threat to score, as he tied for the FBS lead with three defensive TDs in 2013.

9. Laremy Tunsil

Ole Miss Rebels

Junior | Offensive tackle

Score: 8.51

Although off-field issues brought his immediate status into question, there is no doubt about Tunsil's long-term potential. Ole Miss' star left tackle will almost certainly be one of the first players selected whenever he decides to enter the NFL draft. Maybe even No. 1 overall. He's still recovering from an injury suffered in the Rebels' bowl loss, but, once he's back on the field, Tunsil will again rank among the nation's top offensive linemen.

10. Jalen Ramsey

Florida State Seminoles

Junior | Defensive back

Score: 8.40

A perfect blend of speed, athleticism, physicality and strength, Ramsey established himself as a force in FSU's secondary as a true freshman, helping the Seminoles' defense to a national championship. A year later, he blossomed into a leader on the unit, racking up 80 tackles -- including 9.5 for a loss -- two interceptions and 12 pass breakups. This year, he moves to cornerback, where he'll help fill the void left by two early departures to the NFL draft.

Voters: Andrea Adelson, Dane Beavers, Brian Bennett, Kyle Bonagura, Ryan Canner-O'Mealy, Brandon Chatmon, David Ching, Chris Cotter, Jeremy Crabtree, Heather Dinich, Brad Edwards, Chris Fallica, Matt Fortuna, Kevin Gemmell, Travis Haney, Brock Huard, Chantel Jennings, KC Joyner, Sharon Katz, Sam Khan, David Lombardi, Chris Low, Greg McElroy, Erik McKinney, Ted Miller, Josh Moyer, Dan Murphy, Conor Nevins, Max Olson, Greg Ostendorf, Adam Rittenberg, Alex Scarborough, Joe Schad, Mark Schlabach, Jared Shanker, Mitch Sherman, Phil Steele, Joe Tessitore, Jake Trotter, Derek Tyson, Tom VanHaaren, Austin Ward, Jeremy Willis