Cornell University Athletics

2025 | SENIOR SEASON
Appeared in 26 games, making 13 starts (nine at first base, two as designated hitter, two as starting pitcher) … logged 14 outings on the mound, making pair of starts against Binghamton (April 15 and 29) … posted 0-2 record with three saves and 6.98 ERA over 19 1/3 innings … held opponents scoreless across three straight outings against Brown (March 29), Penn (April 13), and Binghamton (April 15) … struck out season-high four batters against UMBC (March 1) and Princeton (May 3), both of which featured him registering a save … also had a save against Brown (March 29) … batted .244 in 45 at-bats with three doubles and seven RBI … had three RBI as part of 3-for-4 day with a double at Columbia (April 4) … other three-hit game came against Yale (March 22), going 3-for-4 with a double and RBI … drove in two runs in 2-for-4 effort against Brown (March 28) … committed just one error in 99 fielding chances (.990 fielding percentage).

2024 | JUNIOR SEASON
Registered 29.2 IP across 12 appearances (six starts) and also logged 19 at-bats over first month of season before sustaining injury that forced him out of action for a month ... served as winning pitcher in collegiate debut against Georgia Tech (Feb. 25), where he registered 5 IP, 4 H, 2 ER ... struck out season-high five batters on two occasions (March 15  at Richmond; April 27 vs. Columbia) ... logged first collegiate save against Brown (May 5), pitching final three innings, allowing one run, and striking out three batters ... went 3-for-19 at the plate over first month of season, recording a double (Georgia Tech - Feb. 24) and RBI (Georgetown - March 10).

2023 | SOPHOMORE SEASON
Missed season due to injury.

2022 | FRESHMAN SEASON
Did not appear in any games.

PRIOR TO CORNELL
Played four years at St. Xavier HS as first baseman and pitcher, helping team claim Greater Catholic League South Division titles in 2019 and 2021 ... GCL Pitcher of the Year, All-City First Team, and All-State honorable mention in 2021 ... All-GCL First Team as a pitcher in 2021 and second team selection at first base in 2019 ... received St. Xavier's Most Valuable Player, Most Outstanding Pitcher and Scholar-Athlete awards in 2021 ... competed at club level with Midland Redskins, earning Central Region Honorable Mention for 2021 Perfect Game Preseason All-American and All-Region teams ... garnered Honorable Mention in 2020 for the Perfect Game Preseason Underclassmen All-American Teams ... tabbed fourth among first basemen in Ohio and top 1,000 nationally among classmates by Perfect Game ... member of National Honor Society and National Latin Honor Society ... AP Scholar with Distinction.

PERSONAL
William Gregory Jaun is the son Gregory and Cynthia Jaun, and he has two sisters and one brother ... father was a four-year pitcher on baseball team at Notre Dame, and brother, Eric, played in outfield at Babson ... enrolled in the College of Arts and Sciences.