He played college basketball for the Seton Hall Pirates, Tulane Green Wave and UAB Blazers.

He committed to playing college basketball for Seton Hall, choosing the Pirates over California, Pittsburgh and UMass.

[3] At Seton Hall, Walker missed several weeks with torn ligaments in his hand as a freshman and averaged 1.8 points per game.

[4] After sitting out a transfer season, Walker averaged eight points, 2.2 rebounds and two assists per game as a redshirt sophomore.

[7] On February 5, 2022, he scored a UAB program record 42 points in a 97–75 victory over Middle Tennessee State.