Let me use some parts from last year’s review on J.B. Wendelken from Michael McDermott, so we don’t have to repeat ourselves:
Jeffrey Benjamin “J.B.” Wendelken was originally a 13th round selection by the Boston Red Sox out of Middle Georgia State, but got traded twice before making his debut with the Oakland Athletics in 2016. After missing 2017 with Tommy John surgery, Wendelken resurfaced with Oakland as a middle inning reliever and posted decent surface numbers across the board in 2018-20, en route to roughly 1.7 bWAR over that stretch.
The Diamondbacks claimed Wendelken off outright waivers on August 11th, where the Oakland A’s had put him after seeing his strikeout rate drop from 29% to 22% while seeing his walk rate increase to 11% and hard hit rate to 35%.