Selected in the fifth round (157th overall) of the 2022 NFL Draft by the Buccaneers.
Logged a team-high-tying 23 special teams snaps in the Week 1 victory at Minnesota, finishing with a team-high two special teams tackles.
Started at corner in the Week 2 victory over Chicago, playing all 53 defensive snaps and finishing with three tackles and one pass defensed. According to Pro Football Focus, was Tampa Bay's third-highest graded defender.
Started at corner in Week 3 vs. Philadelphia and played all 78 defensive snaps. Finished with a then-career-high six tackles and one pass defensed.
In the Week 4 victory at New Orleans, started at cornerback and played all 65 defensive snaps. Finished with four tackles and one pass defensed.
Appeared on special teams and in a reserve capacity on defense, logging a team-high-tying 21 special teams snaps and two snaps defensively. Finished with one tackle.
In Week 7 vs. Atlanta, appeared on special teams and in a reserve capacity on defense, finishing with a team-high- tying 18 special teams snaps and nine defensive snaps. Recorded one tackle.
Played a team-high-tying 21 defensive snaps in Week 8 at Buffalo.
In Week 9 at Houston, played 62-of-72 defensive snaps and finished with six tackles and one pass defensed.
Started at cornerback in the Week 10 victory over Tennessee, playing all 63 defensive snaps and finishing with five tackles and one pass defensed. Was targeted eight times, yield just three receptions for 28 yards.
In Week 11 at San Francisco, played 29- of-60 defensive snaps and finished with one tackle.
Started at cornerback and played 72-of-73 defensive snaps in Week 12 at Indianapolis, finishing with a then- career-high nine tackles (one for loss).
In the Week 13 victory over Carolina, started at cornerback and finished with four tackles.
Started at cornerback and played all 72 defensive snaps in the Week 14 victory over Atlanta, finishing with a then- career-high-tying nine tackles, a then- career-high two passes defensed and his first career forced fumble.
In the Week 15 victory at Green Bay, started at cornerback and played all 60 defensive snaps, finishing with two tackles and one pass defensed. Also added one special teams tackle.
Played 59-of-66 defensive snaps in the Week 16 win against Jacksonville, logging four tackles, one forced fumble and one pass defensed. It marked his third consecutive game with a pass defensed, tying the then-longest stretch of his career.
Started at cornerback in Week 17 vs. New Orleans, playing all 70 defensive snaps and finishing with seven tackles.
In the Week 18 victory at Carolina, appeared on special teams and in a reserve capacity on offense, playing 17- of-52 defensive snaps and logging two tackles. Contributed to a defense that recorded Tampa Bay's first shutout since Nov. 21, 2010 at San Francisco.
In the Wild Card round victory over Philadelphia, played both cornerback and safety and collected three tackles. Contributed to a defense that helped achieve the largest yardage differential in a postseason game in franchise history (+150).
In the Divisional round contest at Detroit, played 44-of-73 defensive snaps and logged six tackles.
Played in 56 games, making 52 starts, over five seasons at Sam Houston State (2017-21), recording 145 tackles (10 for loss), 54 passes defensed, 13 interceptions and six forced fumbles over his collegiate career.
Named third-team All-America by the Associated Press in his senior season in 2021, in addition to being named second-team All-America by Phil Steele and first-team All-WAC.
Invited to play in the Reese's Senior Bowl and the East West Shrine Bowl.
During his fifth and final season in 2021, McCollum produced 50 tackles, eight passes defensed, three interceptions and one blocked kick.
Earned first-team All-Southland honors in his true senior season (2020/21), appearing in 10 games and recording 46 tackles, seven passes defensed, two forced fumbles and one interception.
Received second-team All-Southland recognition in 2019, posting 23 tackles, 11 passes defensed, three interceptions and two forced fumbles in nine games played.
Garnered first-team All-Southland honors in just his second season at Sam Houston State (2018), starting all 11 games and finishing the season with 44 tackles, 11 passes defensed, three interceptions and two forced fumbles.
Played in 14 games as a true freshman, starting 10, intercepting three passes to become the first Sam Houston freshman with three-or-more picks in a season since 1973. McCollum added 42 tackles, a career-best 17 passes defensed and 1.0 sack.
Attended Ball High School (Galveston, Texas), where he was a team captain, team MVP and all-county performer. Ball High School is also the alma mater of Tampa Bay's all-time leading receiver, Mike Evans.
Has an identical twin brother, Tristin, who plays safety for the Philadelphia Eagles.