He played college football for the Oklahoma Sooners, SMU Mustangs and Wisconsin Badgers.
[6] In his first start, he threw for a then school-record seven passing touchdowns in a 56–9 victory over Abilene Christian.
[8] On November 5, 2022, against the Houston Cougars, Mordecai threw for a school-record 9 touchdowns, 7 of which came in the first half.
[12] [13] On April 27, 2024, Mordecai signed with the San Francisco 49ers as an undrafted free agent after he was not selected in the 2024 NFL draft.
[16][17] He was also selected by the DC Defenders in the ninth round of the 2024 UFL draft on July 17.