RTTS has a major issue with it's stat progression. Arm Accuracy, Steal, Baserunning Agg., and maybe a couple of others have a tendency to reset it's growth bar all the way to zero progress if you end the game with a "regression", especially when still at "baseline" 30.
Individual Pitch Stats (the various Velo / Ctrl / Brk) have a tendency to start "resetting to 1/3-ish of a bar" once the stat hits 36 - and won't increase unless you earn enough bar in the game to get to the next point - which typically requires a 2x event going on and exclusive use of that pitch...
This is causing OVRs to be "depressed" compared to how they were in, say 22.