He set a National Collegiate Athletic Association (NCAA) record for saves in a single season with 24.
[2] In 2012, his freshman season, Berg set Bruins and Pac-12 Conference records for appearances while working in middle relief.
[1][4] As a sophomore, Berg became the closer for the 2013 UCLA Bruins, and pitched to a 7–0 win–loss record, 21 saves, and a 0.88 earned run average (ERA) during the regular season.
[9] 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.
[10][11] The Bruins defeated the Bulldogs for the national title[12] and Berg was named to the tournament's All-West Region team.
Berg signed and spent 2015 with both the Eugene Emeralds and the Myrtle Beach Pelicans, where he posted a 2–1 record with a 1.40 ERA.
In 2016, Berg started the season with Myrtle Beach and was later promoted to the Tennessee Smokies; in 43 total games between both clubs, 4–4 record and a 5.17 ERA.
[22] In October 2023, however, he was disciplined after slapping a student-athlete during a dinner with coaches, players and recruits at an El Cholo Spanish Cafe in Santa Monica.