Baseball isn't hard to cap, just have to piece the game together.
Start with the starting pitchers, and they're average expectancy in the game. Both teams hitting averages, also who gives up the long ball, and who is sitting people down.(Makes a big difference) I look at defense first, then see how much offense it would take to win the game, based on how many runs I can count on the starter giving up.
Then the available bullpen era's. and recent form. Have they been gettin blown up lately in the 8th and 9th?
There's trends, stats, standings, streaks, and other stuff, but that's fundamentally capping baseball.