Ceremonial first pitch
The ceremonial first pitch is a longstanding event in baseball in which a guest of honor throws a ball to mark the end of pregame festivities and the start of the game. Originally, the guest threw a ball from their seat in the grandstand to the pitcher or catcher of the home team, but the ritual changed after United States President Ronald Reagan threw the first pitch on the field at an unscheduled appearance at a 1988 Baltimore Orioles game.