Posterior.
What happens to your bet

Extra innings and the automatic runner

Do runs from the ghost runner count toward the total and player props?

The honest answer

MLB scoring treats extra-inning runs as real, so game totals reflect them — but whether a specific player-prop stat credits the automatic runner (and how books settle exotic markets tied to him) is per-book. MLB's rulebook decides what happens to the game; it says nothing about wagers. What happens to a bet is set by each sportsbook's own house rules, and they genuinely differ from book to book. Check the house rules of the book where the wager was placed.

What MLB rules say about the gameOBR 5.11(c)

Under MLB rules the placed runner is fully real: his runs count on the scoreboard and in the final score (they are only shielded from the pitcher's earned-run line for scoring purposes).

What to check in your book’s house rules
  • Do full-game totals include extra innings, including automatic-runner runs, as a stated rule?
  • How do books credit stats involving the placed runner (RBIs, runs scored) for player props?
  • Are any markets settled at the end of nine innings rather than the final score?

Posterior is verifying each major book’s current house rules for this scenario and will publish per-book answers with sources and check dates. We do not state a book’s policy until we have read it.