Jock had a storied career with the Saint Mary’s Gaels, finishing his career with the school 7th all-time in scoring and 5th all-time in rebounding. He has the Gaels’ highest scoring single season, totalling 761 points in his senior year. Jock joined the Gaels as a freshman in 2014, but rose to prominence during his junior season in Moraga. He averaged 16.9 points and 9.5 rebounds per game as a junior, leading the Gaels to the NCAA Tournament in 2017.

As a senior over the 2017-18 season, Jock was one of the most prolific players in all of college basketball, averaging 21.5 points and 10.2 rebounds per game, and walking away with WCC Player of the Year and First-Team All-WCC honours. He was a top-15 finalist for the Wooden Award for the most outstanding player in college basketball, and a top-5 finalist for the Kareem Abdul-Jabbar award for the top centre in college basketball.