Alexander attended Immokalee High School in Immokalee, Florida. During his career he had 139 tackles and 10 interceptions. He was rated by ESPN as a five-star recruit and was rated as the fourth best overall player in his class. He attended the Army All American Bowl. He committed to Clemson University to play college football.

2015: Member of the Bednarik and Thorpe. Award preseason watch lists … preseason third-team All-American by Athlon.

2014: First-team freshman All-American by FWAA … second-team freshman All-American by Athlon … Honorable Mention All-ACC selection (media, coaches) … had 22 tackles, two tackles for loss, six pass breakups and one recovered fumble in 766 snaps over 13 games (13 starts) … first in school history in snaps by a freshman … 10th in school history in snaps by a cornerback … opponents threw 57 passes at his man and completed just 20, with two touchdowns … did not allow a touchdown the final nine games … first freshman corner to start 13 games in a season … had three tackles in 60 snaps at No. 12 Georgia on Aug. 30 … had two tackles and a pass breakup in 66 snaps at No. 1 Florida State on Sept. 20 … had one tackle and a pass breakup in 81 snaps against North Carolina on Sept. 27 … had two tackles and one tackle for loss in 54 snaps at Boston College on Oct. 18 … had a pass breakup and recovered fumble in 62 snaps against Syracuse on Oct. 25 … had two tackles and a pass breakup in 49 snaps at No. 23 Georgia Tech on Nov. 15 … had five tackles in 74 snaps against South Carolina on Nov. 29 … had four tackles and two pass breakups in 45 snaps against No. 24 Oklahoma on Dec. 29.

2013: Redshirted … was slated to be in the mix, but suffered an injury in the preseason.

Before Clemson: Rated the No. 4 overall player in the nation by ESPN, the highest rating by a Tiger signee since Da’Quan Bowers was No. 1 in the class of 2008 … No. 2 defensive back in the nation and No. 2 player in Florida by ESPN … No. 34 player in the nation by 247Sports.com, No. 42 by Rivals.com and No. 71 by Scout.com … No. 4 cornerback in the nation by 247Sports.com … consensus top-10 player in Florida … played in the U.S. Army All-American game … first-team all-state selection … helped his Immokalee High School team to an 11-4 record and a berth in the AAAAA title game in 2012 … had 51 tackles, four interceptions, two caused fumbles and one recovered fumble as a senior … had 42 tackles and three interceptions as a junior … had 139 tackles and 10 interceptions in his career … ran track and rated among the top-15 wrestlers in Florida in his weight class … from same high school that produced former Miami (Fla.) All-American Edgerrin James … coached by Jerrod Ackley at Immokalee High School … twin brother, Mackenro, signed with Auburn … recruited by Tony Elliott.

Personal: Majoring in parks, recreation & tourism management … born Nov. 12, 1993.