The stars of college football come and go in what feels like the blink of an eye, and no team is immune to losing key contributors each and every offseason.

Here are the biggest losses for each SEC team as they begin the transition from 2014 to 2015:

Alabama — Amari Cooper: It’s not as though Alabama is lacking speed or athleticism at the skill positions on offense entering 2015, but there isn’t a player on the Tide’s roster, or perhaps in the entire SEC, capable of duplicating the season Cooper had in 2014. Cooper was hands down the nation’s best wideout, and considering Alabama will also be undergoing a change at quarterback this offseason, Cooper’s absence will be tough to ignore.

Arkansas — Trey Flowers: In a conference loaded with dominant defensive ends, Flowers was unfairly overlooked for much of the season. Nevertheless, he will be missed in an Arkansas front seven that controlled the line of scrimmage in 2014, as will his 15.5 tackles for loss, his 6.0 sacks and his six passes defended at the line of scrimmage. Arkansas will continue to funnel talent into its front seven, but it won’t have a player capable of impacting the game in as many ways as Flowers did this season.

Auburn — Nick Marshall: Auburn’s proverbial “athlete playing quarterback” emerged as a threat in the passing game this season, throwing for 2,500 yards and 20 touchdowns to complement the dangerous rushing tandem he formed with SEC leading rusher Cameron Artis-Payne. Marshall was the perfect fit to run Gus Malzahn’s offense, especially when he began to emerge as a passer in 2014. He was capable of getting his playmakers involved in a number of ways, and he, too, presented numerous threats on any given play. Jeremy Johnson will be more than capable as Auburn’s next signal caller, but the Tigers will miss Marshall’s versatility and explosiveness.

Florida — Dante Fowler: Florida’s star defensive end was the anchor of a top 5 defense in the SEC in 2014, although he elected to leave school early for the NFL upon Will Muschamp’s dismissal from the program. Fowler was a pass-rushing nightmare for UF’s opponents, amassing 8.5 sacks, 15.0 tackles for loss, 17 more quarterback hurries and two forced fumbles in just 12 games. Florida will return plenty of productive defenders in 2015, but it will miss Fowler’s abilities to disrupt opposing offenses on a play-by-play basis.

Georgia — Todd Gurley: The Bulldogs rushing attack hardly missed a beat when Nick Chubb stepped in for Todd Gurley during his four-game suspension and again after his ACL tear. However, Gurley was far and away the SEC’s best tailback in 2014, and now opponents will have an entire offseason to prepare for what Chubb brings to the table in the run game. Backs of Gurley’s caliber are rare, and Georgia will miss his abilities not just as a runner, but as a pass-catcher and blocker out of the backfield as well.

Kentucky — Bud Dupree: The Wildcats’ senior entered 2014 with more career sacks than any active player in the SEC, and a Kentucky program short on future NFL talent will miss his athleticism in the front seven moving forward. Dupree served as both a dominant pass-rushing defensive end and as a brilliant run-stopping outside linebacker with cover skills that trump most natural linebackers. Mark Stoops and Vince Marrow continue to attract top talents to the Bluegrass, but few defensive ends on any team in the conference were as valuable as Dupree.

LSU — La’El Collins: Collins served as the veteran anchor to one of the SEC’s most dominant offensive lines in 2014. LSU’s bookend left tackle helped the Tigers boast the SEC’s No. 4 rushing attack while also allowing the second-fewest tackles for loss. LSU’s passing game was lacking all season, but Collins kept the edges clean for most of the season, even if the Tigers couldn’t use the extra time in the pocket to complete passes down the field. It could take a year or two for the Tigers to find a capable replacement at left tackle, and in the SEC West that weakness can be easily exposed.

Mississippi State — Benardrick McKinney: The player Mel Kiper Jr. has considered his top NFL middle linebacker prospect for more than a year finally declared himself eligible for the NFL Draft earlier this month, closing the book on his MSU career. He led the team in tackles this season and was the Bulldogs most consistent run-stopper, a skill every defense needs in an SEC loaded with potent rushing attacks. He was also more than capable in coverage and rarely missed a tackle even against the fastest of skill players in the open field.

Missouri — Bud Sasser: The Tigers will lose supreme talents in defensive ends Shane Ray and Markus Golden, but they also have a history of finding hidden gems at those positions and developing them into All-SEC-caliber performers. Thus, Mizzou’s biggest loss is Bud Sasser, the SEC’s third-leading receiver in 2014 on a passing offense ranked 10th in the conference. Maty Mauk will lose his top three receiving options entering next season, and Sasser was far and away the most consistent and most explosive of the bunch.

Ole Miss — Cody Prewitt: The 2013 All-American was not as heralded as a senior in 2014 due to cornerback Senquez Golson’s brilliance, but Prewitt remained one of the most vital pieces to the Landshark defense in his final season in Oxford. The versatile safety can play in the box or deep in coverage, and he’s as instinctive as any safety in America. Prewitt is a hard-hitter who rarely misses tackles, and his consistency helped anchor one of the best secondaries in all of college football in the back-end of the nation’s No. 1 scoring defense in 2014.

South Carolina — Dylan Thompson: The Gamecocks’ one-year starter at quarterback didn’t set the SEC on fire, but he did close the year as the conference’s leading passer with more than 3,500 yards through the air. South Carolina’s quarterback situation entering 2015 is uncertain at best, and it’ll miss the consistency Thompson brought to an offense forced to compensate for a woeful Gamecocks defense all season. South Carolina may lose more talented players, but the player it will have the toughest time replacing is Thompson.

Tennessee — A.J. Johnson: Tennessee’s senior middle linebacker missed a string of games to close the season due to some unsettling off-field allegations, but as far as the game on the field is concerned, he’ll prove to be a vital loss for a Vols defense trending positively. Johnson provided consistency and leadership from his middle linebacker position, and it’s no surprise the defense began to struggle once he exited the lineup. His talent will be tough to replace, but it’s his role as the quarterback of the defense that UT will miss in 2015.

Texas A&M — Deshazor Everett: Texas A&M’s defense was woeful again in 2014, resulting in the termination of former defensive coordinator Mark Snyder. However, one of the few bright spots on the defense was Everett, a senior who finished second on the team in tackles, second in interceptions and third in passes defended. Everett brought a consistency to the field that few other Aggie defenders possessed, and although John Chavis will surely turn the defense around in the coming years, A&M will miss Everett’s leadership and talent in the secondary next season.

Vanderbilt — Kyle Woestermann: Vanderbilt won’t lose many key seniors from its 2014 squad, but Woestermann is one contributor who the Commodores will miss when the 2015 season begins. He recorded just 30 tackles on the season, but registered a whopping 5.5 tackles for loss as a member of a struggling defense in a conference loaded with dominant offensive lines. He was by no means a superstar, but Vandy will still miss his playmaking abilities as a run-stopper next season.