If it makes you feel better, Casas has an .841 OPS in games started by a righty, and .821 in games started by a lefty. I always look at these splits too because they factor in the relievers that follow the starters, and of course the dreaded "openers".
I'm just surprised you have an issue with Casas "only" starting 81 of 86 games against righty starters. That's 94% of the time. And again we're talking about a rookie who struggled early and who some had a lot of concerns about.
Maybe Cora's resting policy has worked perfectly for him, because he has come on tremendously since the slow start.
a) No, I didn't say hot or cold doesn't matter. All I said is that if a guy has a scheduled rest day in the midst of a hot streak it's not a big deal. But if a guy is badly slumping obviously a day or two off can be necessary.
No, I'm not going to show you why he needed the days off. What I've said is that we don't know exactly why Cora sat him but I'm confident there was a good reason. So obviously I don't necessarily have the explanation.
My guess would be those 5 off days were mostly in April in May.
OK, you said Casas has started 80 out of 85 vs RHP.
Which 5 games didn't he start? How was he hitting at the time? He wasn't hitting much at all in April and May. Who started instead?
If you're really going to dig into this you have to go all the way with it.
Hitters can slump whether they're playing every day or have been rested a lot.
Ted Williams said something about the difficulty of hitting, I think.
But sure, let's blame it all on the manager, it's easy, it's simple.
Yoshida missed 4 games in April with a minor injury of some sort.
But those are being included in his "rest days".
Some of these complaints are really getting stupid.
He's in a slump. Maybe he has a health issue we don't know about.
And wasn't he out for a week or so with some issue?
I guarantee Cora isn't sitting him just for the hell of it.
Because we're used to pro athletes and people in general committing adultery. It's a story when you cross over from the merely immoral to the criminal.
Not that I disagree with your point.