He played college football at Boise State, and was selected by the Detroit Lions in the second round of the 2007 NFL draft.
Alexander attended Rancho Cucamonga High School from 1998 to 2002, where he was a track and field athlete as well.
He was one of the players who helped lead Boise State to their improbable Fiesta Bowl win over Oklahoma in the 2006 season.
[9] After participating in the Bill Walsh Minority Internship Program with the Tennessee Titans during the team's 2015 training camp, Alexander served as the defensive backs coach for Indiana State.
[9] Alexander again participated in the Bill Walsh Minority Internship Program in the summer of 2016, this time with the Tampa Bay Buccaneers.
Safety Minkah Fitzpatrick led the group with a career-high and League-leading six interceptions, earning Pro Bowl and First Team All-Pro honors.
Alexander was hired by the Las Vegas Raiders under new head coach Antonio Pierce and general manager Tom Telesco.