Jack Rafe Flaherty
- Bats Right, Throws Right
- Height 6' 4", Weight 205 lb.
- High School Harvard-Westlake High School
- Debut September 1, 2017
Pitcher Jack Flaherty was taken by the St. Louis Cardinals and scout Mike Dibiase as the 34th overall pick in the 2014 amateur draft. He had gone 23-0 with a 0.63 ERA his last two years in high school and won Gatorade Player of the Year for California as a senior.
Flaherty was 1-1 with a 1.59 ERA in 22 2/3 innings for the GCL Cardinals his first year, posting a 0.971 WHIP while striking out 28 batters. In 2015, he was 9-3 with a 2.94 mark for the Peoria Chiefs, again averaging more than a strikeout per inning. He began 2016 with the High A Palm Beach Cardinals. He was a member of the United States team in the 2017 Futures Game.
Agfter making his debut with the Cardinals when rosters expanded in September of 2017, he recorded his first career win on May 20, 2018, 5-1 over the Philadelphia Phillies. He struck out 13 batters in that game.