Following a stout two-way football career at Loreauville High School, Alexander graduated HS as a four-star recruit and a top-50 CB, according to ESPN and On3. As it turned out, Alexander decided to join Southeastern Louisiana and enjoyed a notable three-year career as a Lion. In his freshman season, however, Alexander struggled mightily in coverage, recording zero passes defended, zero interceptions, and a disappointing 150.0 QB rating when targeted.
With this said, Alexander would be much improved as a sophomore, totaling six pass breakups, six interceptions, and 61.2 QB rating when targeted, and was later named to the 2021 FCS All-American Second Team.
The same could be said in Alexander's junior season, as the 6'2", 188-pound CB chalked up five pass breakups, three interceptions, and gave up an 80.1 QB rating when targeted, resulting in an All-Southland Conference First Team selection.
After three decorated years at Southeastern Louisiana, Alexander transferred to LSU in the 2023 offseason to help offset the losses of Micah Baskerville and Mekhi Garner. This season, the senior transfer CB has done just that, as Alexander has recorded 44 total tackles, seven passes defended, and two interceptions.
With a tall frame, long arms, and strong hands, Alexander has one of the largest catch radiuses in the nation and tracks the ball extremely well with a natural knack for forcing turnovers. Similarly, Alexander's 4.50 40-yard dash gives him the straight-line speed to recover in coverage to make something happen on interception or fumble returns.
As recently shown by former Alabama and current Dallas cornerback Trevon Diggs, guys that often make turnover-worthy plays are the ones who can miss their assignment or make crucial plays in coverage.
In LSU's 34-31 rivalry win versus Arkansas in week four, quarterback KJ Jefferson began rolling out to his right on a broken-down play, and Alexander began to lose sight and was stuck in no-man's land, about ten yards in front of Jefferson. This allowed WR Luke Hasz to get behind the secondary and take Jefferson's pass 59 yards to the endzone.
With the current projection of a seventh-round cornerback, there will be areas Alexander must improve on once in the NFL. This includes doing a better job of wrapping up, both in run support and in tackling after the catch, and playing more conservative in tackling situations.