FWIW, I'm delighted to see that both bellhorn and moonslav have stoutly defended Cora's moves last night, as they deserve to be.
About pulling Pivetta after 5 innings. I did want him to go out for the 6th, but, when he didn't, I thought I knew why. Yes, Pivetta had been astounding holding the Astros to 1 run, but he had also been lucky. And, when he was pulled, the Astros lineup was facing him for the 3d time.
Moreover, as we now know, Cora had a terrific plan for getting through the next 4 innings. Unfortunately, that depended on Whitlock, his very best reliever, throwing two shutout innings in the 7th and 8th, and Eovaldi closing in the 9th. Whitlock threw a first pitch fastball right down the middle to Altuve, then, in the 9th, Eovaldi threw four straight fastballs to lead off hitter Correa in the 9th, resulting in a double off the right field wall. To me the fault clearly lay with Whitlock and Eovaldi, not Cora.
And the other great fault of course was the lineup, which scored 0 runs in 8 innings and was 0 for 9 with RISP.
So why are we blaming Cora and/or the ump when we know Whitlock didn't do his job, Eovaldi didn't do his, and the lineup didn't do theirs?