A game's winner, the correct moneyline, and whether the Red Sox or Orioles score in the first inning are the immediate outcomes being decided.
Multiple run lines (from -1.5 up to -7.5) and three totals thresholds (12.5, 13.5, 14.5) determine payouts for close games versus blowouts and high-scoring affairs.
Starting pitchers, their early-inning command, and both teams' top hitters most directly decide the result.
Managers' lineup choices, late-inning relievers, bench bats, and the health of key players will swing run margins and first-inning scoring probability.
Pitching matchups and bullpen depth drive odds: a dominant starter or a taxed relief corps shifts win and run-line chances.
Weather, ballpark dimensions, platoon splits, recent offensive form, and last-minute injuries also alter total-run expectations and the likelihood of early scoring.
Look for the finalized starting pitchers and official lineups released before the game and any late scratches or medical updates.
Also track weather forecasts, first-inning scoring tendencies, bullpen availability signals (warm-ups, recent usage), and in-game pitch counts; these move run-line and total probabilities quickly.