Flaherty (5-9, 4.65 ERA) was not a reason the Tigers lost 8-4 at Comerica Park against the Seattle Mariners on Sunday, July 13, to finish the first half of the 2025 season 59-38.

Jack Flaherty - Detroit Tigers The last three starts of June were not kind to Jack Flaherty, who allowed 18 earned runs on 16 hits in 13 innings with 12 walks and 15 strikeouts. That’s a 12.46 ERA, ...

Flaherty's 13-7 record, 3.17 ERA, 1.068 WHIP and 3.1 WAR earned him his latest eight-figure deal, while his ability to stay healthy in 2025 has set him up for another big payday in 2026.

Wrong. In his next start, Flaherty allowed eight runs in the Tigers' 14-6 loss to the Tampa Bay Rays on Friday, June 20, at George M. Steinbrenner Field — the first of three games in the series.

Detroit Tigers pitcher Jack Flaherty (9) pitches in the first inning against the Cincinnati Reds at Comerica Park in Detroit on Saturday, June 14, 2025. SHAWN WINDSOR: Gleyber Torres bet on himself.

The Tigers entered Sunday with a 5.03 bullpen ERA since June 1. Good as they are, they need to recapture some of last year's pitching magic.

Flaherty, who is on the books for $25 million in 2025, was 5-6 with a 3.41 ERA and 1.065 WHIP through 13 starts this season. He is now 5-8 with a 4.83 ERA, 1.213 WHIP and 0.2 WAR for the year ...