Well we do have a sample to look at...
Vs Alonso:
1 - 94.1 fastball (ball)
2- 92.5 fastball (strike)
3- 93.4 fastball (strike)
4 -96.1 fastball (strike)
Vs nimmo:
1 - 95.0 fastball (strike)
2 - 96.4 fastball (strike)
3 - 81.0 slider (ball)
4 - 82.3 slider (single 63.8 EV)
For reference, here's the last 3 fastballs and sliders before injury...
Fastball: 94.1, 94.8, 94.2
Slider: 78.9, 81.3, 81.0
And what were the effectiveness of those pitches? How much did they break? Even regardless of that, we're not talking about a ton of pitches here. And it was immediately after the injury. As someone who has had cracked ribs on multiple occasssions, I can assure you that the pain is significantly worse the days after the accident than in the moment. What happens when his mechanics get out of whack as he is adjusting to the injury?
If you think the injury shouldn't affect his performance then you are a moron.