Grab a pair of kettlebells by the ‘bells’ and do a bent read delt raise. You will have to use lighter weight bc grip may be your limiting factor so just do more reps until your shoulders are cooked.
Why not just grab dumbbells and do this movement? 1. This will help train the extensors of the wrist which are a common rehab target for elbow pain (pitchers). 2. These are different, not sure what the exact mechanism is, but they will smoke your shoulders. -
4-6 x fail