It's time to start counting the days until pitchers and catchers report.

On Monday, Major League Baseball released first workout dates for every club ahead of Spring Training, which begins late next month. Pitchers and catchers for the Cardinals, D-backs, Giants, Phillies and Reds are scheduled to begin working out on Feb. 18 -- the earliest start date for any club. Meanwhile, the Marlins' full squad will work out on Feb. 22, making them the first team to require all players in camp.

Here's a breakdown of each club's important dates this spring, and a key player to watch:

Angels

Pitchers and catchers: Feb. 19

Full squad: Feb. 24

Spring Training opener: March 1 at Giants

Opening Day: April 4 vs. Cubs

Player to watch: In four seasons with Atlanta, Andrelton Simmons established himself as one of the best defenders in the sport. Now, he brings his wizardry to the West Coast, and the Angels hope they have their shortstop of the future.

Astros

Pitchers and catchers: Feb. 19

Full squad: Feb. 23

Spring Training opener: March 3 at Phillies

Opening Day: April 4 at Yankees

Player to watch: Carlos Correa's rookie season was incredible by just about any metric. What can he do for an encore? The Astros youngster is looking to establish himself as one of the best shortstops in the game.

A's

Pitchers and catchers: Feb. 21

Full squad: Feb. 26

Spring Training opener: March 3 at Angels

Opening Day: April 4 vs. White Sox

Player to watch: Sonny Gray has developed into one of the game's best young arms, and the A's have reportedly turned down several trade offers. Gray, a potential franchise cornerstone, has the chance to justify Oakland's faith in him with another Cy Young-caliber season.

Blue Jays

Pitchers and catchers: Feb. 22

Full squad: Feb. 26

Spring Training opener: March 1 at Phillies

Opening Day: April 3 at Rays

Player to watch: Roberto Osuna burst onto the scene as a lock-down closer last season, but the 20-year-old's role is uncertain after Toronto acquired closer Drew Storen in the offseason. It's worth keeping an eye on Osuna this spring to see whether the Blue Jays have any long-term plans to stretch him into a starting role.

Braves

Pitchers and catchers: Feb. 20

Full squad: Feb. 25

Spring Training opener: March 1 vs. Orioles

Opening Day: April 4 vs. Nationals

Player to watch: Ender Inciarte is the only player in the Shelby Miller deal who projects to make the Braves' roster on Opening Day this season. At 25, he's a nice piece in Atlanta's re-build, and it's worth watching whether he'll play center or left field.

Brewers

Pitchers and catchers: Feb. 21

Full squad: Feb. 25

Spring Training opener: March 2 vs. UW-Milwaukee

Opening Day: April 4 vs. Giants

Player to watch: After a fantastic first couple of months in the big leagues, Taylor Jungmann faltered a bit in September. He'll be looking to bounce back and re-establish himself as a reliable arm toward the top of the Brewers' rotation.

Cardinals

Pitchers and catchers: Feb. 18

Full squad: Feb. 23

Spring Training opener: March 2 vs. Florida Atlantic University

Opening Day: April 3 vs. Pirates

Player to watch: Randal Grichuk had one of the best under-the-radar offensive seasons last year -- that is, until an elbow injury in mid-August. If he's healthy in 2016, he could be poised to establish himself as a middle-of-the-order threat for St. Louis for years to come.

Cubs

Pitchers and catchers: Feb. 20

Full squad: Feb. 24

Spring Training opener: March 3 at Brewers

Opening Day: April 3 at Angels

Player to watch: Jason Heyward's tenure on the North Side begins. He's proven himself a very capable center fielder in the past, but it'll still be worth watching him as he transitions to an everyday role there.

D-backs

Pitchers and catchers: Feb. 18

Full squad: Feb. 23

Spring Training opener: March 1 vs. University of Arizona

Opening Day: April 4 vs. Rockies

Player to watch: Zack Greinke's deal with the D-backs may have been the most surprising signing of the offseason, as Arizona swooped in late to ink the veteran right-hander. He's looking to continue to dominate the same division he's dominated for the past three seasons.

Dodgers

Pitchers and catchers: Feb. 20

Full squad: Feb. 25

Spring Training opener: March 3 vs. White Sox

Opening Day: April 4 at Padres

Player to watch: Kenta Maeda -- the only right-hander in the Dodgers' rotation -- may have been the biggest enigma on the free-agent market this offseason. With Greinke's departure, the former Hiroshima Carp ace could play a pivotal role in whether the Dodgers can win their fourth straight NL West crown.

Giants

Pitchers and catchers: Feb. 18

Full squad: Feb. 23

Spring Training opener: March 2 vs. Angels

Opening Day: April 4 at Brewers

Player to watch: The Giants invested a whole lot of money in Johnny Cueto -- $130 million to be exact. When he's on, he's brilliant (see: World Series Game 2). But he struggled for the most part down the stretch in 2015, and will be looking to re-gain his Cy Young-caliber form.

Indians

Pitchers and catchers: Feb. 19

Full squad: Feb. 23

Spring Training opener: March 1 vs. Reds

Opening Day: April 4 vs. Red Sox

Player to watch: There simply aren't many players in the sport more fun to watch than Francisco Lindor. He's one of the most complete young players in baseball, with a dazzling defensive game and the plate prowess to match it.

Mariners

Pitchers and catchers: Feb. 20

Full squad: Feb. 25

Spring Training opener: March 2 vs. Padres

Opening Day: April 4 at Rangers

Player to watch: Seattle bought low on Leonys Martin this offseason, after a woeful 2015 campaign. But in the two seasons prior, Martin batted .268/.319/.374 while playing a very capable center field. Which version of Martin will the Mariners get?

Marlins

Pitchers and catchers: Feb. 19

Full squad: Feb. 22

Spring Training opener: March 1 vs. University of Miami

Opening Day: April 5 vs. Tigers

Player to watch: Carter Capps established himself as one of the most dominant relievers in baseball last season before going down with an elbow injury in early August. Will he be able to return to the form that saw him post a 1.16 ERA and 0.81 WHIP in 30 outings last season?

Mets

Pitchers and catchers: Feb. 19

Full squad: Feb. 26

Spring Training opener: March 3 at Nationals

Opening Day: April 3 at Royals

Player to watch: Michael Conforto will be stepping into a starting role in the Mets' outfield, and -- barring a free-agent splash -- New York will be relying heavily on his bat in 2016. A spot in the middle of the lineup could be in the cards for Conforto.

Nationals

Pitchers and catchers: Feb. 20

Full squad: Feb. 25

Spring Training opener: March 2 at Rays

Opening Day: April 4 at Braves

Player to watch: Daniel Murphy turned into Babe Ruth last October, mashing homers in a playoff-record six consecutive games. If the Nats get anything close to his 2015 postseason production in '16, they'll have gotten a steal.

Orioles

Pitchers and catchers: Feb. 19

Full squad: Feb. 24

Spring Training opener: March 1 at Braves

Opening Day: April 4 vs. Twins

Player to watch: The 2016 campaign is a critical one for Kevin Gausman -- so critical in fact, that he proclaimed it "huge" earlier this offseason. The right-hander turned 25 this month and is still awaiting his breakout season. His success figures to be pivotal for the Orioles' chances in an up-for-grabs AL East.

Padres

Pitchers and catchers: Feb. 19

Full squad: Feb. 24

Spring Training opener: March 2 at Mariners

Opening Day: April 4 vs. Dodgers

Player to watch: The Padres got a look at right-hander Colin Rea late last season, and the results were mixed (2-2, 4.26 ERA). This season, Rea, the club's No. 4 prospect, has a chance to earn himself a spot in the starting rotation.

Phillies

Pitchers and catchers: Feb. 18

Full squad: Feb. 23

Spring Training opener: Feb. 28 vs. University of Tampa

Opening Day: April 4 at Reds

Player to watch: Vincent Velasquez came over to Philadelphia in the Ken Giles trade, and he has a chance to earn a starting spot right away. The 23-year-old right-hander possesses a fastball in the mid-to-high 90s and posted a 4.37 ERA in 19 appearances for Houston last season.

Pirates

Pitchers and catchers: Feb. 19

Full squad: Feb. 23

Spring Training opener: March 1 at Tigers

Opening Day: April 3 vs. Cardinals

Player to watch: John Jaso has proven himself to be a very good on-base threat, but he's played just two games at first base in his career. He'll have to learn fast, because that's the position the Pirates signed him to play -- and they don't appear to have any other spot for him.

Rangers

Pitchers and catchers: Feb. 19

Full squad: Feb. 24

Spring Training opener: March 2 at Royals

Opening Day: April 4 vs. Mariners

Player to watch: Yu Darvish underwent Tommy John surgery last March, and there's a chance he won't be back in time for the start of the '16 campaign. But he'll most likely be throwing during Spring Training, and the sooner he returns, the sooner the Rangers will have one of the best 1-2 punches in baseball with Darvish and Cole Hamels.

Rays

Pitchers and catchers: Feb. 21

Full squad: Feb. 26

Spring Training opener: March 2 vs. Nationals

Opening Day: April 3 vs. Blue Jays

Player to watch: Matt Moore's 2015 campaign was hard to watch, as he struggled mightily following a return from Tommy John surgery. With a fully healthy offseason under his belt, the 26-year-old southpaw will be looking to get back to his 17-win form of '13.

Reds

Pitchers and catchers: Feb. 18

Full squa: Feb. 23

Spring Training opener: March 1 at Indians

Opening Day: April 4 vs. Phillies

Player to watch: Raisel Iglesias' ERA wasn't great in his rookie season, but there are plenty of other reasons the Reds should be high on the right-hander entering camp this year. His 26.3 strikeout rate trailed only Noah Syndergaard among rookie starters with at least 50 innings pitched last season.

Red Sox

Pitchers and catchers: Feb. 19

Full squad: Feb. 24

Spring Training opener: March 2 vs. Twins

Opening Day: April 4 at Indians

Player to watch: Who else? The Red Sox gave David Price the largest contract in Major League history for a starting pitcher. His presence figures to fill the void in a rotation that was in desperate need of a true ace in 2015.

Rockies

Pitchers and catchers: Feb. 19

Full squad: Feb. 25

Spring Training opener: March 2 vs. D-backs

Opening Day: April 4 at D-backs

Player to watch: Rockies top pitching prospectJon Gray made his much-anticipated debut last season, struggling a bit over nine starts. He spent the offseason adding a curveball to his arsenal and figures to be in contention for a rotation spot out of camp.

Royals

Pitchers and catchers: Feb. 19

Full squad: Feb. 23

Spring Training opener: March 2 vs. Rangers

Opening Day: April 3 vs. Mets

Player to watch: It appears as though Jarrod Dyson will be given the keys to a full-time right-field role in 2016. The speedy left-handed hitter has never recorded more than 300 at-bats in a season, but he's reached base at a respectable .320 clip over his six-year career.

Tigers

Pitchers and catchers: Feb. 19

Full squad: Feb. 23

Spring Training opener: Feb. 28 vs. Florida Southern

Opening Day: April 5 at Marlins

Player to watch: Jordan Zimmermann received the first major contract of the offseason when he signed with Detroit in November. He'll be looking to revitalize a starting rotation that finished last in the AL in ERA in 2015 -- following a four-year stretch where it was one of the best in the game.

Twins

Pitchers and catchers: Feb. 22

Full squad: Feb. 27

Spring Training opener: March 2 at Red Sox

Opening Day: April 4 at Orioles

Player to watch: Top prospectByron Buxton will be given every chance to win the starting center-field job for the Twins this season. He struggled a bit in his first taste of the big leagues, but seemingly has all the tools to become the next great outfielder in Minnesota.

White Sox

Pitchers and catchers: Feb. 19

Full squad: Feb. 23

Spring Training opener: March 3 at Dodgers

Opening Day: April 4 at A's

Player to watch: Carlos Rodon is the guy to watch in Sox camp (although Todd Frazier figures to garner plenty of attention, too, as he joins the South Siders from Cincinnati). Rodon, the No. 3 overall pick in the 2014 Draft, showed flashes of brilliance last season. The White Sox hope he develops into a complement for Chris Sale atop the rotation.

Yankees

Pitchers and catchers: Feb. 19

Full squad: Feb. 25

Spring Training opener: March 2 vs. Tigers

Opening Day: April 3 vs. Astros

Player to watch: Which Starlin Castro did the Yankees trade for? Will they get the player who posted a dreadful .603 OPS in the first half of last season? Or did they get the three-time All-Star, who went on a tear in August and September? It's also worth monitoring Castro's continued transition to second base.