I am going to track Jose Abreu's progress here.
Before IL
Fastball 0.353 xwOBA
Breaking 0.220 xwOBA
OffSpeed 0.202 xwOBA
After IL 8/23
Fastball
0.465 xwOBA (this is second on the Astros Alvarez 0.466)
95.0 Exit Velocity
Breaking
0.472 xwOBA (this is FIRST on the Astros)
89.3 Exit Velocity
OffSpeed (only 6 PA)
0.317 xwOBA
76.3 Exit Velocity
It is a TINY sample size. SOMETHING changed during the IL.