I think he "Padres faced Kittredge the day before" stuff is super over rated. Yes, Tatis and Arraez saw Kittredge the day before. You know who saw Morejon and Miller and other relievers the day before? The Cubs lineup. No one here was saying "Man, we really have the advantage now!". Sure, Miller is a step above Kittredge, but Kittredge, especially since coming to Chicago (and some tweaks to his stuff and location) had been elite. He's posted a 1.87 xFIP, a 38% K%, and a .211 BABIP against. Speaking of Miller, he's literally the only RP who's had a better xFIP since the TDL in baseball. That's how good he's been.
I don't think the single PA and a handful of pitches yesterday made those guys any better yesterday; in fact, both hits from those guys were on chase pitches out of the zone. If I told you Kittredge got Tatis to swing at a 95mph sinker in on the hands and got Arrez, on an 0-2 count to swing at a slider 3 inches below the zone, you'd probably expect better outcomes than two on and zero outs. Credit to both of the Padres hitters for getting those pitches, but it wasn't like he was bad, and I don't think the day before lead to those hits.
Speaking on Cease; he's been a roller coaster this year but has been a great pitcher over his career most of the time. He was pretty great yesterday. Sadly, that's what players can do. The Cubs had some bad luck (they smoked three balls in the first inning, Michael Busch had what appeared to be an RBI single up the middle - .xBA over .700 - taken way) coupled with Cease who had his control. Tip your hat to that.
You hope that the Cubs can do better, but yesterday was a little dash of early variance going the Padres' way instead of the Cubs' way, with a settled-in-Cease, a dominating bullpen and I think a bad call to let Shota face Machado. Cubs offense had an uphill battle all day and when things roll against you early it becomes hard to get it to swing the other way when you're facing roughly 5 innings from dominant arms.