Less a Twitter bot idea than a general (baseball-related) bot idea:
- you check into a stadium in Foursquare and reference a specific game that you're attending
- the bot looks up the starting lineup and picks a player to focus on for a whole inning. Weighted towards position players and against pitchers and especially the DH.
- you watch that player and that player only. See how they prepare for each pitch, what they do while on the bases, etc. They never leave your sight.
This won't work if you don't attend the game. TV broadcasts can't follow individual players.