According to The Wall Street Journal, Apple will provide teams of MLB iPad Pros to keep track of data, like scores. It's weird to think that up to this point, the MLB has used regular paper to keep track of these scores in the dugouts. MLB and Apple have a very good relationship with each other. MLB is an Apple Pay partner and uses iBeacon technology at their ballparks.
"Teams will be able sift through performance stats from current and past seasons, weigh potential pitcher-hitter matchups, look at “spray charts” showing where a player is likely to hit a ball, even cue up videos of plays from previous games."
- The Wall Street Journal