Happ's only issue was LHP. Versus RHP this year he put up 127 wRC+, which is virtually identical to every other season since 2021.
He's hit about 100 wRC+ vs LHP in those years, but this year it was 36. With a Tyrone Taylor platoon it shouldn't really affect us this postseason.
I suppose its possible some teams might miss this and assume he's just age regressing, and we can resign him at a decent contract.