Pivetta had good stuff, his FB is harder to hit than his velocity would suggest, 94-95 t 97, which suggests either deception or some late movement.
The curve was very good, but too high, sharp break but he has to get down to knee high or below, not waist high.
Almost no changeups, he has to develop a changeup to be effective in the long-run, not too many successful two pitch starting pitchers.
This is where injuries hurt, it's just easier for a young pitcher like Pivetta to work on his secondary pitches in AAA, you can see him try too hard to be fine against ML hitters.
It's not that he's not ML caliber right now, but like Velasquez, he needs a lot of work to reach his potential, and young pitchers often get gunshy when a pitch gets pounded.
If you're gonna sharpen the curve and develop the changeup, you're gonna hang a few, and in AAA they're more likely to be popped up.
Williams continues to look good, he's certainly not the wild swinger he was in previous years, a little too aggressive on some ABs, but not excessively so.
He really does resemble a LH Altherr, which is nice, I mean what team can't use athletic OFs who can run and throw and hit for power?