Career Accolades

  • NFCA All-West Region first team (2023)
  • All-Pac-12 first team (2023)
  • Pac-12 All-Defensive Team (2023)
  • Pac-12 All-Freshman Team (2023)
  • Pac-12 Academic Honor Roll (2024)

As a Sophomore (2024)

  • Pac-12 Academic Honor Roll
  • Started all but one game for the Cardinal, appearing in 66 games at short
  • Finished second on the team in hitting with a .304 average
  • Finished fourth on the team in hits with 51
  • Tripled six times on the year, tied for the third-most in a single season in program history
  • Scored 30 runs for the Card, driving in 23 as well
  • Posted a .926 fielding percentage with a team-leading 103 assists

As a Freshman (2023)

  • NFCA All-West Region first team
  • All-Pac-12 first team
  • Pac-12 All-Defensive Team
  • Pac-12 All-Freshman Team
  • Started all 62 games
  • The only conference player to earn All-Pac-12, All-Defensive Team and All-Freshman Team honors
  • Led the team in walks (28)
  • Second on the team in hits (62) and batting average (.350)
    • Ninth in the Pac-12 in hits
  • Registered 16 multi-hit games
  • Career-high four hits in a win over Charlotte (Feb. 18)
  • Scored the game-winning run in a comeback victory over No. 17 Oregon (May 11) to advance to the semifinals of the Pac-12 Tournament in Tucson

Prior to Stanford

  • A 2022 graduate of Monroe High School
  • No. 12 in the nation according to Extra Innings (2020)
  • Two-time USA Today Player of the Year in Washington (2021, 2022)
  • Two-time Max Prep Best Player in Washington (2021, 2022)
  • Four-time team Offensive Player of the Year
  • Max Prep All-American
  • Two-time All-State first team (2021, 2022)
  • Three-time All-Wesco first team
  • Scorebook Live 2022 Washington High School Player of the Year
  • Batted .691 as a senior
  • Holds multiple high school records: most hits in a season (65), batting average (.691), career batting average (.649), doubles in a season (18), triples in a season (6) and career triples (12)
  • U.S. Army Reserves National Scholar-Athlete of the Year

Club Competition

  • Member of the NW Bullets
  • Placed third in the PGF National (2022)
  • Placed in ninth in the PGF National (2021)
  • Selected to PGF High School All-American team
  • Selected to Alliance High School All-American team

Personal

  • Daughter of Steve and Tami S. Mahler
    • Mother played shortstop at Washington from 1992-96, earning All-World Series honors in 1996
      • Selected to play in the Olympic Festival in 1993
  • Has two younger sisters, Jessi and Sawyer
    • Also played volleyball in high school with sister Jessi
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2023
Infield
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River_Mahler_01152023_TN_8V9A3549
2024
Infield
5-8 / -