What happens if a first goalscorer player comes on after the first goal?

How to use this answer

This answer is based on the mathematical principle or published rule identified in the source below. If the question involves a live betting market, confirm its settlement definition before applying it to a specific bet.

Some bookmakers void that selection; others use market-specific rules, so the bookmaker's first-goalscorer conditions control.

For player, card and corner markets, the exact selection type matters. A singles rule is not automatically the same as a bet-builder rule; use the market definition and the settlement source for the operator shown on your slip.