I’m absolutely certain that some while back we had a conversation on here about which managers/teams were using replay well, and which were very much not….but I’ll be damned if I can find it now. I can’t even remember who it was that posted this link to Baseball Savant’s replay challenge tracker, but it’s still sitting in my bookmarks. I do remember that, at the time, I thought Joe Maddon was pretty good at using his challenges, Kevin Cash was pretty terrible at using his.
Now that the season is over, one of the folks over at JABO has compiled a more detailed study on the success and failure of managers in terms of replay. They aren’t just looking at the success/failure rate of challenged calls, they are looking at the timing of those challenges as well by folding in leverage data.