Strahm, Seranthony, Soto (and Lorenzen) didn't pitch yesterday, they'll all be good tomorrow in what should be a traditional start. Just can't expect three in a row from Kimbrel. Alvarado maybe. Kerkering probably doesn't pitch today.
I don't think the first inning thing is the issue for Walker at this point so much as he's not used to relief pitching period.