He played college football for the Washington State Cougars and was selected by the Cardinals in the fifth round of the 2019 NFL supplemental draft.
He originally attended La Serna High School where he was named honorable mention All-San Gabriel Valley League as a sophomore as the Lancers went on to win the 2013 CIF Southern Section title.
He transferred to Downey High School following his sophomore year where he played both wide receiver and cornerback and was named All-CIF and All-San Gabriel Valley League in his junior and senior seasons.
As a senior, Thompson intercepted five passed and averaged 20.2 yards per reception and was named to the All-Area Dream Team by the Long Beach Press-Telegram.
[5] Thompson entered his junior season on the Chuck Bednarik Award watchlist and recorded 67 tackles (4th on the team) along with two interceptions and eight passes broken up and was named honorable mention all-conference.
[6][7] Over the course of his collegiate career, Thompson started all 39 of Washington State's games while on the team and finished with 191 tackles with six interceptions and 17 passes broken up.
[8] On June 28, 2019, Thompson had been informed by the NCAA that he had lost his last year of collegiate eligibility due to a violation stemming from a purchase of an over-the-counter supplement from a local nutrition store.
[16][17] On September 8, 2019, Thompson made his professional regular season debut, playing seven snaps on special teams as the Cardinals tied 27–27 against the Detroit Lions.
[23] On September 13, 2020, Thompson started in the Arizona Cardinals season-opener, but injured his ankle after making one solo tackle and exited on the first drive of the first quarter.