[Sweed]

Here are the stats from my last completed season in v25. I don't have a big enough sample in v26 to use right now. But the OP does mention it's been an issue for a "few years".

It's not what I'm seeing in my game. I've done nothing special to tweak my game. I use default player creation, progression, etc. etc. etc. I do autocalc my League Totals yearly but have never tweaked anything, including steals attempts or success.
I manage the Cubs and play every inning of every game. In my last season I lead the league in Team Steals by 52 with a team total of 245 steals, and an 84.5% success rate. I don't lead the league every year, but last season I had 5 guys that were 7 or 8 in ability with 6+ aggression. Most seasons I may have one or two of these guys at most, and with those two get the same successful results.

I have mentioned before in other threads that I do pick my spots to run. IOW never on an 8 arm C, and rarely try on a 7 hold (steals against these guys are broken hit and runs when they happen). But even with elite base stealers I still get thrown out by a 3 arm and think "huh"? What I don't do is give up trying because I got thrown out, be that by a cannon arm or a marshmallow arm.

Screenshot of my league's team offensive stats. FWIW my League Totals are from an earliere version of OOTP and have been imported along with my game version to version. Expected slash for LT: .266/.338/.422