GUIDES · BETSLIP DOCTOR
How does an opener change the meaning of a pitcher's start count?
An opener can be the official starter even if the pitcher works only the first inning. MLB credits a game started to the first pitcher to throw a pitch for the team; the pitcher who follows and works the bulk innings does not receive that start.
For Bettors and cappers learning to read baseball records · Updated
The first pitch defines the game start
MLB’s Games Started definition uses the first pitcher to throw a pitch for the team. It does not set a minimum innings threshold for a start. The count describes who opened the game, not how long that pitcher stayed.
An opener and a bulk pitcher can have different roles
An opener is typically a reliever used at the beginning of the game, often to face the top of the opposing lineup. A second pitcher, sometimes called the headliner, may then handle most of the innings. That longer appearance does not change who was first to pitch.
A start count cannot by itself tell you the planned bulk role or a pitcher’s next-game workload. Use the actual appearances and innings for those questions.
A fictional opener deployment
Hypothetical game: Opener A throws the first pitch and records three outs in the first inning. Headliner B enters in the second and works through the sixth. A receives the game-start credit because A threw the first pitch for the team; B’s longer outing does not transfer that start. The invented deployment describes a past box-score role, not a forecast of future usage.
Related questions
Can the bulk pitcher receive the game-start credit after an opener?
No, not if another pitcher threw first for the team. Games started follows the first pitcher to throw, not the pitcher who works the most innings.