with the bruins, berg competed in the 2013 ncaa division i baseball tournament, leading the team to the college world series national championship against the mississippi state bulldogs. the bruins had a tournament record of 8–0 heading into the finals. at the championship series, berg set a new ncaa single-season record with his 24th save on june 24, 2013 and he also made his 51st appearance of the season, becoming the first pitcher in ncaa history to record 50 or more appearances in two seasons. the bruins defeated the bulldogs for the national title and berg was named to the tournament's all-west region team.