Jack Te Haki O'Loughlin
- Bats Left, Throws Left
- Height 6' 5", Weight 210 lb.
- Born March 14, 2000 in Adelaide, South Australia Australia
Jack O'Loughlin has pitched in the minors and been on the Australian national team.
O'Loughlin was signed by Detroit Tigers scouts Kevin Hooker and Glenn Williams in July 2016.  He pitched regularly for the Adelaide Bite in the 2016-2017 Australian Baseball League at age 16, going 3-3 with a 3.02 ERA. He was 2-0 with a 0.69 ERA and 15 K in 13 IP in the 2017 U-18 Baseball World Cup, beating Nicaragua's Angel Obando and Cuba's Osvaldo Cárdenas. He tied Matthew Liberatore, Ryan Weathers, Ginji Miura, Jun-won Seo and Soma Tokuyama for the event lead in wins, was 10th in IP (no one with more innings had a better ERA) and tied for 10th in whiffs (with Jun-young Ha, Michele Vassalotti and Marlon Pérez). 
He slumped in the 2017-2018 ABL, going 2-1 with a 7.04 ERA and doubling his walks (7 to 14) while his IP fell from 41 2/3 IP to 23. He made his US debut in 2018, going 0-1 with a save and a 4.35 ERA for the Connecticut Tigers, whiffing 25 in 20 2/3 innings. Returning to Connecticut in '19, he had a 2-4, 3.13 record while being in the regular rotation. He started a combined no-hitter against the Tri-City ValleyCats, succeeded by Michael Bienlien, Kyle Thomas and Kory Behenna. He worked the first six.  The 2020 minor league season was wiped out by the COVID-19 pandemic.
The Adelaide native split 2021 between the West Michigan Whitecaps (2-1, 3.54 in 5 G), Lakeland Flying Tigers (3-0, 2.19 in 8 G) and FCL Tigers East (0-1, 2.25 in 1 G), for a combined 5-2, 2.64 record. He was 2-1 with a 4.01 ERA for West Michigan in 2022, pitching mainly in relief. Back with the Bite in 2022-2023, he had a 3.27 ERA and no decisions in seven starts. He then made Australia's roster for the 2023 World Baseball Classic. He was the third-youngest pitcher on the team, after Will Sherriff and M's farmhand Blake Townsend. 
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