It has to be said that William Hill are renowned for innovative features that can be used for sports betting, and none are more innovative than Impact Sub. Impact sub from William Hill is a football betting feature that keeps your player bets alive after they have been subbed off.
There’s nothing worse than painstakingly scouring the stats to put together a bet builder, only for one of your selected players to be substituted. Ordinarily that would be the end of your, however with the William Hill impact sub promotion, your bet still has a fighting chance.
So If your selected player leaves the pitch early due to injury or a poor performance, the bet for that particular player moves to the substitute at the same odds. This applies to singles, football accumulators and Bet Builders.
Let’s say you have a Man City vs Newcastle United accumulator that includes Erling Haaland to score anytime. The Newcastle defence is standing firm and Haaland just isn’t having any luck in front of goal. So Pep decides to switch things up and swap him out for Omar Marmoush who goes on to score a last minute winner. Thanks to impact sub your bet rolled over to Marmoush and were able to celebrate the win.
This is why William Hill’s Impact Sub should be factored in to any football bet you place with them. If you’re not yet a customer, then simply sign up here and claim a generous welcome bonus. Otherwise just keep reading to learn more.
William Hill Impact Sub Betting Markets
Being an exclusive promotion for football betting, Impact Sub is somewhat limited on the markets it can be applied to. But the good news is that it applies to the most popular player markets, so the combinations are plentiful. These include:
- First goalscorer
- Anytime goalscorer
- Last goalscorer
- Two or more goals
- Hat-trick bets
- First or Last Scorer
- Score or Assist
- Assists
- Shots on target
- Cards
- Fouls
So for any bets placed on the above markets in qualifying matches, your bet will remain active if your initial selection is replaced.
How to use Impact Sub at William Hill
Using the fantastic impact sub promotion is actually really simple and can be done as follows;
- Log In to your William Hill Account
- Navigate to their football betting page
- Find and select the match you want to bet on
- Choose a Market that displays the “Impact Sub” Icon
- Select the player you want to back in the corresponding market to add them to your betting slip as a single, acca or bet builder
The good news is there is absolutely no need to opt-In to William Hill impact sub. Simply add any eligible bet to your bet slip and it will be automatically applied when a substitute is made.
It’s worth bearing in mind though that even if the replacement had longer odds, the odds of your initial selection will remain in place.
Impact Sub works for bets placed before kick-off and for in-play betting, which adds a little flexibility. It is also available for Premier League, EFL, Champions League and other European leagues and competitions, but this is entirely at the discretion of William Hill.
Why William Hill Customers Value Impact Sub
Managers use substitutions to control games. These changes often disrupt player bets, especially in Bet Builders. Impact Sub reduces the risk that comes from early withdrawals, injury concerns or tactical switches.
A simple example:
- You back a striker to score anytime.
- He is replaced after 55 minutes.
- His substitute enters the match.
- Your goalscorer bet now moves to the substitute.
- The substitute scores in the 82nd minute.
- The original bet wins.
This structure helps football betting fans who focus player markets such as goal scorers, card markets and more. It’s also worth noting that Impact Sub applies even if you place your bet in your local betting shop, and you can check the progress or even cash out your bet using the William Hill bet slip tracker.
How Impact Sub Fits Into Bet Builders
Bet Builders often include player legs such as shots, goals or cards. Losing one leg can kill the entire bet. Impact Sub protects these selections by moving the relevant leg to the substitute.
This gives Bet Builder users more stability and reduces the chance of a single substitution ending a multi-leg wager.
Key Rules You Need To Know
William Hill sets out clear conditions for the Impact Sub feature:
- Markets must show the Impact Sub icon to qualify.
- The feature covers single bets, accumulators and Bet Builders.
- Cash Out remains available until the first substitution occurs.
- If a substitute is also replaced, the bet passes to the next player entering the pitch.
- Only actions completed while a player is on the pitch count.
- The offer does not apply to enhanced odds, flash boosts, epic boosts or “#YourOdds” markets.
- Any events involving a substituted-off player after they leave the pitch (for example, a card while on the bench) still count.
These rules help create a consistent experience across various match scenarios.
Who Benefits Most From Impact Sub?
Impact Sub can be a handy addition for any type of gambler, but it particularly suits football punters who:
- Build Bet Builders with player-driven legs
- Regularly back goalscorers, assist markets or shots on target
- Place accumulators that rely on player bets
- Bet in leagues with high substitution rates
- Want extra protection for early withdrawals
Football matches have become more substitution-heavy due to squad rotation, fixture congestion and five-sub rules. Impact Sub helps you manage these variables.
Impact Sub vs Other Super Sub-Style Offers
Impact Sub sits in the same category as other substitute guarantee offers from rival bookmakers. The core idea is stable: keep the bet active after a substitution, but with each operator using their own format and rules, how does William Hill Impact sub stack up?
It has to be said that we found Impact Sub to be a pretty solid option when compared to Paddy Power Super Sub, bet365 sub on play on and BoyleSports Sub Swap. But your betting preferences and style may be different to ours, so we recommend reading our guides, to make sure you pick the best one for you.
William Hill Impact Sub Summary
Impact Sub is a practical addition for anyone who bets on player markets. It keeps football bets alive when managers make changes and supports Bet Builder stability. The odds stay the same, the bet remains valid and the substitute takes over the responsibility winning your bet for you.
If you fancy giving William Hill Impact Sub a go but want to see what else is available from one of the best bookmakers in the UK, the take a look at our William Hill betting guide to see what else they offer.