But Taulia Tagovailoa — 5-11, 208 pounds — doesn’t have quite as good measurables as his brother, though that has mattered less and less in both the college and pro games. That doesn’t change the fact that he lacks meaningful playing time heading into 2020. He’s certainly talented enough to challenge for the starting position, but there could be a learning curve early in his stint as starter.Paul TysonTyson is another four-star, blue-chip recruit whose commitment to Alabama in 2019 provided much-needed depth in the Crimson Tide’s quarterback room. The great-grandson of Alabama legend Paul “Bear” Bryant, Tyson earned his scholarship offer by completing 238 of 336 passes for 3,392 yards and 36 touchdowns to four interceptions as a senior at Hewitt-Trussville High School (Trussville, Ala.) He also offers more prototypical size at 6-5, 220 pounds, and has had a season to learn the playbook.But Tyson seems to have become an afterthought in Alabama’s quarterback battle for next season. He appeared in only one game as a freshman (against Western Carolina) and didn’t log any stats. He can improve his chances with a strong showcase this spring, and can rest easy knowing he will have an equal chance at earning the Tide’s starting position. That raises the question: Who could possibly step into replace him at Alabama in 2020? Tagovailoa, for his part, is excited about the prospect of the Crimson Tide’s coming quarterback battle:MORE: Tagovailoa, forever a college football icon, right to leave for NFL draft”It’ll be good,” Tagovailoa said. “I’m looking forward to it. … If you love competition, now there’s the best time for Mac Jones, for my little brother (Taulia Tagovailoa) and for that Bryce Young, the incoming freshman.”Indeed, Alabama isn’t hurting for talent at that most important of positions: Jones is the incumbent starter, with Taulia Tagovailoa and Paul Tyson — four-star quarterbacks in the class of 2019 — right behind him. Then there’s Young, the No. 6 overall recruit in the 2020 class and the highest-ranked quarterback prospect ever under Alabama coach Nick Saban.It all promises to be one of the most enticing quarterback battles of the college football season. With that, Sporting News looks at the quarterbacks who will aim to step in to replace Tua Tagovailoa for the 2020 college football season:MORE: Who is Mac Jones, Alabama’s new starting quarterback?Mac JonesJones, a rising redshirt-junior, started the final three games of Alabama’s season after Tua Tagovailoa suffered a season-ending hip injury. He led the Crimson Tide to a 2-1 record while completing 52 of 76 passes (69.3 percent) for 937 yards and 11 touchdowns to two interceptions. He proved adept at throwing the deep ball and running Alabama’s RPO in the Citrus Bowl victory over Michigan, and already has a rhythm with returning receivers DeVonta Smith, Jaylen Waddle and John Metchie III. The return of Henry Ruggs III would add another layer of familiarity for the 2020 season as well.The biggest knock against Jones — against all of Alabama’s quarterbacks — is that he’s not Tua Tagovailoa. Fans will also be quick to remember his two pick-sixes in the Iron Bowl, bad throws that ultimately proved the difference in a 48-45 loss to Auburn. Jones also hasn’t shown the ability to use his legs like his predecessor. Still, he’s talented enough to start for several teams across the country, and will have time to stake his claim as the Tide’s starter. Jones, planning to pursue a graduate degree at Alabama, could conceivably grad-transfer to another school if he didn’t win the starting job.Bryce YoungYoung, the No. 1 dual-threat quarterback and No. 6 overall player in the class of 2020, has the highest upside in Alabama quarterback’s room. He showed striking accuracy and precision on deep passes at Mater Dei High School (Santa Ana, Calif.), as well as an ability to make and extend plays with his legs. An early enrollee, Young can learn Alabama’s playbook in time for the Tide’s spring game.The 2020 All-American Game MVP also heads to Tuscaloosa with absurd career stats, compiled against one of the toughest high school schedules in the country: 13,250 passing yards, 152 passing touchdowns and 26 rushing scores. Young knows what it’s like to be the star player of a powerhouse team, and that won’t change at Alabama. His relationship with Alabama offensive coordinator Steve Sarkisian can’t be understated either.Still, Young will be the least-experienced challenger for Alabama’s quarterback position next season. It’s not unfair to wonder if he’d make freshman mistakes if he took over the starting position. Jones already has experience as a starter, and Taulia Tagovailoa logged some stats in 2019. Tyson has a year head start on learning the playbook and building a rapport with Alabama’s offensive skill players. Young, listed at 5-11 and 183 pounds, will need to add plenty of muscle before he can even think of taking the field against SEC defenses.MORE: Where will Tua Tagovailoa go in the 2020 NFL Draft?Taulia TagovailoaTaulia Tagovailoa was a blue-chip recruit in the 2019 recruiting class who garnered offers from some of the top college programs around the country. He lost his redshirt status by appearing in five games last season, combining to complete 9 of 12 passes (75 percent) for 100 yards and a touchdown against Southern Miss, Arkansas and Western Carolina. Like his older brother, Taulia showed flashes of brilliance as a dual-threat quarterback, which he showed in the 2019 A-Day Game. Alabama quarterback Tua Tagovailoa declared for the 2020 NFL Draft on Monday, leaving some of the biggest shoes to fill in all of college football in his wake.The two-year starter, who came off the bench to lead Alabama to the 2018 College Football Playoff national championship game, finished his career in Tuscaloosa with an all-time stat line: 474-of-684 passing (69.3 percent), 7,442 passing yards, 87 touchdowns to 11 interceptions and a career 199.4 quarterback rating.