Loading the slate…
Where the numbers come from
Scores, lineups, pitches, box scores, standings, leaderboards, splits, and transactions come from MLB's public Stats API. FIP, xFIP, WAR, wRC+, and wOBA are MLB's own sabermetric feed, not a third-party estimate.
Wind uses the game-day reading when MLB has posted one. Before that, a forecast is rotated against the park's azimuth. Domes are called out. Gap distances that a park doesn't publish are interpolated and labeled.
Exit velocity and barrels come from Baseball Savant's leaderboard export. That site often blocks browsers, so those chips can be missing without taking the rest of the site down.
Bullpen tags are a rest-and-pitch-count heuristic from each reliever's game log. They are not an official availability list. Batter-versus-pitcher lines are career samples and stay labeled that way.