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William Hill · the UK · Checked

What does Impact Sub mean on William Hill?

Impact Sub means your player bet survives a substitution. It's William Hill's name for Super Sub: if your player is taken off, your bet carries over to the player who replaces him, and anything your player had already done still counts. It only applies to football events and markets marked with the Impact Sub icon.

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Quick facts

Feature name
Impact Sub
Bookmaker
William Hill
Country
the UK
Last checked

How it works

  1. Look for the Impact Sub icon next to the event or the market. Only marked football events and markets are covered.
  2. If your player is substituted, the bet carries over to his replacement. The new player is shown in your bet slip once the change has been made.
  3. Whatever your player already did carries over. If he scored once before going off, that goal counts towards a "2 or more goals" bet that his replacement then needs to complete.
  4. If the replacement is substituted too, the bet carries over again to the next player, even if that player is a goalkeeper.
  5. It works pre-match and in-play, on football match and scorer markets, Bet Builder selections and selected Price Boost markets.
  6. Bets placed with a free bet or a Winnings Boost token still get Impact Sub.
  7. Cash Out on an online bet is based on the substitute's price, not the original player's. Shop bets can't be cashed out.
  8. Substitutions are taken from Opta (Stats Perform) or another data provider.

Markets

Markets we saw marked with Impact Sub on the William Hill site on 16 September 2026. The icon on the market decides.

Goalscorer markets

  • First goalscorer
  • Anytime goalscorer
  • 2 or more goals
  • Hat-trick
  • Last goalscorer
  • First and last goalscorer
  • First or last goalscorer

La Liga and EFL: also these player markets

  • Player shots on target
  • Player to assist
  • Player to score or assist
  • Player shown a card
  • Player fouls
  • Player fouls won
  • Player foul involvements

Europa League

  • Goalscorer markets
  • Player shown a card

Not covered

  • A player sent off: the bet loses.
  • A player forced off injured when his team has no substitutes left.
  • Enhanced Odds and Price Boost Flash or Epic Boost selections, unless the offer says otherwise.
  • Extra time and penalty shootouts.
  • Cards a player gets before coming on or after going off.

Example

You back a striker to score 2 or more. He scores once and is substituted after an hour. His replacement scores. Your bet wins: the first goal carries over and the replacement scores the second.

Questions

What does Impact Sub mean on William Hill?

It means your player bet doesn't die when your player is substituted. The bet moves to the player who comes on, and what your player already did still counts.

Does Impact Sub work on Bet Builder?

Yes. William Hill says Impact Sub works on Bet Builder selections as long as the market is marked with the Impact Sub icon.

What happens if my player gets a red card?

Impact Sub doesn't apply. A sent-off player is not substituted, so the bet is settled as a loser.

Does extra time count?

No. Impact Sub doesn't apply to extra time or penalty shootouts.

Other Super Sub sites in the UK

See all 28 Super Sub sites in the UK →

Betting from Ireland? This bookmaker also holds an Irish licence. See the Super Sub sites licensed in Ireland →

Sources

Last checked: