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University of Hawai'i at Manoa Athletics

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2025 Fall Baseball Roster

41 Liam O'Brien

41 Liam O'Brien

  • Position:
    Right-Handed Pitcher
  • Height:
    6-5
  • Weight:
    215
  • B/T:
    R/R
  • Class:
    Senior
  • Hometown:
    Tucson, Ariz.
  • Highschool:
    Salpointe Catholic HS
  • Prev School:
    Paradise Valley CC / Gonzaga

Summary

Biography

2025 (Senior)
  • One of the toughest pitchers to hit in the country, holding opponents to a .120 batting average while allowing just 20 hits in 52.0 innings pitched.
  • His 3.46 hits allowed per nine innings and .120 opponent batting average would both lead the nation, however he finished four innings shy of the minimum number of innings required.
  • Appeared in 17 games with nine starts, going 4-3 with a 2.60 ERA and 59 strikeouts with 38 walks.
  • Allowed just two extra base hits all season (1 double, 1 triple).
  • Did not allow a hit over his first 12.2 innings pitched and went 24.1 innings before allowing an earned run.
  • Pitched 5.1 hitless innings in his first start of the year vs. Wichita State on Feb. 23, striking out six and allowing one unearned run.
  • Shut out Northeastern over seven innings on Mar. 2 with six strikeouts and only one bunt base hit allowed.
  • Struck out a career-high seven batters over 4.2 innings of one-hit ball to earn the win out of the bullpen vs. Cal State Bakersfield on Apr. 27.
  • Held Oregon State hitless over three innings of relief to contribute to a combined three-hit shutout on May 4.
  • Worked 3.2 scoreless innings out of the bullpen on May 11 at Cal State Fullerton, striking out six while walking four.
Before UH
  • Pitched junior season at Gonzaga after spending sophomore year at Paradise Valley Community College and freshman season at Pima Community College.
  • Named a Northwoods League all-star during the summer of 2024 pitching for the Kalamazoo Growlers.
  • Fanned 74 batters over 49.2 innings, going 6-1 with a 3.81 ERA while holding opponents to a .183 batting average.
  • Appeared in five games (one start) during his season at Gonzaga in 2024, striking out 12 batters over 7.1 innings pitched.
  • Struck out 90 batters over 72.2 innings pitched, going 5-6 with a 4.09 ERA as a sophomore in 2023.
  • Turned in eight quality starts, including six outings in which he worked into the seventh inning.
  • Pitched in 16 games as a freshman at Pima CC in 2022, striking out 41 batters over 23.1 innings with a 1-1 record and 4.24 ERA.
  • A 2021 graduate of Salpointe Catholic High School.
  • Named second-team 4A all-state as a senior in 2021.
  • Went 5-1 with a 1.37 ERA and 59 strikeouts to just 16 walks over 41.0 innings.
No stats available for the current season.

Stat Snapshot (Season)

Pitching Stats
ERA
Strikeouts
W-L
WHIP
Hitting Stats
Batting Avg.
Home Runs
RBI
Hits

Stat Snapshot (Career)

Pitching Stats
APP
Strikeouts
W-L
WHIP
Hitting Stats
Batting Avg.
Home Runs
RBI
OBP

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Season Stats

Season:
2026
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Career Stats

Career Statistics

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Historical Player Information

  • 41

    2025Senior

    Right-Handed Pitcher
    6'5" 215 lbs
    41
  • 41

    2026Senior

    Right-Handed Pitcher
    6'5" 215 lbs
    41