Colorado School of Mines Athletics

2023: CSC First-Team Academic All-America ... CSC Academic All-District ... D2 ADA Academic Achievement Award ... RMAC Player of the Week (3/14) ... Starting left fielder for the Orediggers, making 44 starts in 45 appearances ... Led the team with a .392 batting average while scoring 42 runs on 62 hits including 19 doubles and 14 home runs with 61 RBI ... He also walked 26 times, was hit by five pitches, stole five bases and sacrificed himself on six occasions ... Nielsen's doubles, home runs, total bases, RBI, and .778 slugging percentage all ranked top-10 in a single season in program history ... He also led the RMAC in 2023 in slugging percentage while sitting #8 in RBI, #9 in home runs, and #10 in doubles ... Was #13 in NCAA Division II in slugging percentage for the season, #17 in RBI per game, #22 in doubles per game, and #38 in home runs per game.

CAL (2019-22): Began playing for the University of California Berkeley in 2019 and appeared in 21 games with 15 starts … Finished his time as a Golden Bear with five runs on nine hits including four doubles and one home run with eight RBI .. Also walked five times and fielded 1.000 on defense … Also named to the Pac-12 Spring Academic Honor Roll in 2021 … Doubled in three straight games running April 14 at Arizona to April 18-19 at UCLA.
 
HIGH SCHOOL/CLUB: Three-sport athlete at Christian High School in California, competing in baseball, basketball and football … Lined up in the outfield for the baseball team, at power forward on the court and at tight end and defensive end on the gridiron … Earned a total of eight varsity letters … Career high school line including a .395 average in 86 games with 102 hits, 56 RBI and 66 runs on 15 home runs … named All-San Diego County in 2017 and 2018 … Selected to the 2018 San Diego All-Star team … Pursuing his master's in engineering & technology management at Mines.