Jock joined Melbourne United in December of 2020, ultimately leading them to the 2021 NBL Championship. Jock averaged 16.4 points, 7.8 rebounds, 2.3 assists, and 1.4 blocks per game over the course of his one season in the NBL, and won the Larry Sengstock Medal for the Most Valuable Player of the Grand Final series. Jock was also named to the All-NBL First Team.