A native of Montclair, New Jersey, Cronin attended Regis High School (New York City), then played college baseball at Holy Cross where he graduated with a Bachelor of Arts in History in 2019.
Starting 10 of 15 games over 71 innings, his overall record during his senior year was 6–4 with a 4.06 earned run average (ERA) and 61 strikeouts.
[4] He spent his first professional season split between the rookie–level Arizona League White Sox and Single–A Kannapolis Intimidators, accumulating a 2.88 ERA across 20 contests.
[7] Cronin split the 2022 season between Birmingham and the Triple–A Charlotte Knights, making 49 total appearances and logging a 3.71 ERA and 36 strikeouts and 2 saves across 51.0 innings of work.
[17] Cronin has been the Assistant Director of Operations for Tread Athletics, a Charlotte, North Carolina-based baseball training facility whose clientele includes major-league players and prospects, since 2020.