In baseball, if a team “runs out of pitchers,” the game does not automatically stop or get canceled; the team must keep someone on the mound, even if it means using tomorrow’s starter or a non‑pitcher.

Basic idea

  • A team can use every pitcher on its active roster, but it is still required to have somebody pitch each inning until the game ends.
  • Once all regular pitchers are used, managers may turn to position players (like infielders or outfielders) to pitch.

What teams actually do

  • Bring back a starter who was supposed to pitch the next day and use them in relief during a marathon extra‑innings game.
  • Use a position player on the mound; this has happened in long or lopsided games when both teams had effectively run out of normal pitching options.

True “out of players” scenario

  • Official rules say that a game is forfeited if a team cannot or refuses to put nine players on the field at all, regardless of position.
  • In practice, teams nearly always avoid this by shuffling remaining players and letting non‑pitchers throw until the game ends.

Real‑world example

  • In a 17‑inning Orioles–Red Sox game, both clubs ran out of regular pitchers and ended up using position players on the mound, with Baltimore winning behind first baseman Chris Davis pitching.

TL;DR: When a team “runs out of pitchers,” they don’t get to stop; they improvise with whoever is left, and only if they cannot field nine players at all would the game be forfeited.