In four seasons, he played 46 regular season games with 41 matches and started all six postseason games in which he played. He totaled 188 tackles (165 solo), two interceptions, 33 defended passes, six loss tackles, three forced fumbles and two fumble recoveries. Jackson also averaged 22.3 yards on 27 kickoff returns and 8.8 yards on 53 punt returns. In the postseason, he had 24 tackles (22 solo) and five defended passes.
As a rookie in 2017, Jackson started all 18 of Tennessee’s games, including two in the playoffs. He had 74 tackles – 67 in the regular season – and forced three fumbles. The following year, he played all 19 games, starting 13 in the regular season – when he posted a career record of 69 tackles (62 solo) and intercepted two passes.
In 2019, Jackson was inactive for five games with a knee injury, but resumed all three playoff games as the Titans advanced to the AFC Championship Game.
Jackson had a prominent performance at the University of Southern California, where he received the 2016 Jim Thorpe Award for best defensive defense in college football. In these three seasons with the Trojans, he scored 15 touchdowns in total in four different ways: via reception (six), interception (one), punt return (four) and kickoff return (four). Jackson tied two NCAA records with eight career touchdowns in initial returns and nine touchdowns in all runbacks. He also set career records at USC, with 2,141 return yards and 79 start returns.