Substitution Guarantee Bookies | Best Sites for Football Substitutes Betting

Written by: Paul Ricci
Updated: November 18, 2025

Unsurprisingly, football is the most popular sport for bettors in the UK, and it is not particularly close. Slightly less than half of active bettors have placed bets on football, with the Premier League and Champions League the most popular competitions. This has led to bookies becoming creative with the football markets they offer, from card betting, to corner betting and more.

In addition to these markets, bookmakers are also beginning to offer promotions to cover some of the markets available, and one of these is the substitution guarantee.

There are a few bookies who offer the substitution guarantee, and in this article, we will explain how it works. Each bookie has their own version of the substitute guarantee, but the principle remains the same.

What is the Substitution Guarantee?

As we mentioned above, the substitution guarantee has a few different names depending on what bookie you are using, but it is essentially a promotion that gives you a fallback to various player markets in football matches. If you have picked a player to pick up a booking, score a goal or score the first goal, and they are substituted, your bet will then roll over to the player who replaces them. It gives you another chance to make a profit by either your stake being returned to you as a free bet, or your bet winning.

The markets included for this promotion could include: Team first scorer, first/last or anytime goalscorer, player to be booked, player to be red carded, scorecast, wincast, player to win man of the match, to score to or more.

There is nothing worse than when the player who you have backed goes off after five minutes through injury, so at least this promotion gives you some reassurance and means your bet is still alive.

Bet £10 Get £40 In Free Bets
18+. New UK customers (Excluding NI) only. Min Deposit £10. Min stake £10. Min odds Evs. Free bet applied on 1st settlement of any qualifying bet. 30 days to qualify. Free bets expire in 7 days. Cashed out/Free Bets won’t apply. Account & Payment method restrictions apply. 1 Free Bet offer per customer, household & IP Address only. 18+. T&Cs apply.

Best Substitution Guarantee Bookies

The list below includes the best sites that offer the substitution guarantee, all of which go under a different name.

#1. BOYLE Sports Sub Swap

BOYLE Sports has launched a brand new substitution guarantee called sub swap. Any qualifying bet you place on a player-based market, such as first goalscorer, or player to be booked, the bet rolls over to the player who replaces them. If the sub then hits the outcome you’ve predicted, your bet will be a winner. The sub swap icon will appear on your betslip to let you know it is active, and it will also be shown next to relevant markets.

BOYLE Sports sub swap

It is available on all of the big leagues, such as the Premier League, LaLiga, and Serie A, and as the supporter of a lower league club, I am glad to see it is also available for the Championship and Leagues 1 and 2. Boyle Sports has also confirmed that it will be adding even more competitions in the future. Please note that sub swap does not apply to extra time, and is only available active in the regular 90 minutes.

We love this feature as it keeps your interest going right up until the final whistle. We all know injuries happen, and it’s typical if your player gets subbed off because he picks up an injury early on, and you think your bet is down the drain. But with sub swap, the chance of winning remains as the bet automatically swaps to the oncoming player.

Eligible Markets

  • First goalscorer
  • Last goalscorer
  • Anytime goalscorer
  • To score 2+ goals
  • To score 3+ goals
  • Player shots
  • Player shots on target
  • Player assists
  • To be booked
Bet £10 Get £40 In Free Bets
18+. New UK customers (Excluding NI) only. Min Deposit £10. Min stake £10. Min odds Evs. Free bet applied on 1st settlement of any qualifying bet. 30 days to qualify. Free bets expire in 7 days. Cashed out/Free Bets won’t apply. Account & Payment method restrictions apply. 1 Free Bet offer per customer, household & IP Address only. 18+. T&Cs apply.

#2. William Hill’s Impact Sub

William Hill Impact Sub

The impact sub at William Hill means that if your player is taken off, the bet remains open and just goes over to the player who replaced them at the original price. This promotion is available on multiples and bet builders, and pre-match and in-play on singles. The impact sub will kick into gear when an official sub is made, at which point any bets made on the original player will move across to the substitute.

In the scenario where there are markets that require multiple occurrences, such as to score 2 or more, if the player who is about to be subbed off has already scored, that will be added to the player coming on.

Eligible markets

  • Player to score
  • First goalscorer
  • First and last goalscorer
  • Anytime goalscorer
  • Player to score 2 or more
  • Player to score a hattrick
  • Player to assist
  • Player fouls
  • Player to be shown a card
  • Player shots on target

#3. Paddy Power’s Super Sub

Paddy Power Super Sub

If you listen to sports radio, you will have surely heard the Paddy Power Super Sub promotion regularly advertised. It is marketed very heavily, and your bet transfers to the player coming on and replacing the starter.

The offer is accessible to new and existing customers. Make sure you read all of the information, as it is valid only on selected leagues and markets and applies to pre-match and in-play singles, bet builder, and multiple bets on eligible player outcome selections.  Another thing to note with this promo is that it doesn’t apply to Paddy Power prices, but is applicable for Turbo prices. In the really unfortunate event your sub is then substituted, the bet carries on to the third player.

Eligible markets

  • Player to score
  • First goalscorer
  • First and last goalscorer
  • Anytime goalscorer
  • Player to score 2 or more
  • Player to score a hattrick
  • Player to assist
  • Anytime assist
  • Player fouls
  • Player to be shown a card
  • Player shots on target
  • Player to have 1 or more shots
  • Player to have 2 or more shots
  • Player to have 3 or more shots
  • Player to have 4 or more shots
  • Player to have 5 or more shots
  • Player to have 6 or more shots
  • Player to be fouled up to 3 times
  • Player to commit at least 1 foul in the first half

#4. Betfair’s Substitution Guarantee

Betfair's substitution guarantee

 

The Betfair subs promotion is available for all of the major competitions such as the Premier League, Champions League, and other UEFA tournaments. Any matches that have the #Oddsonthat or odds boosts aren’t applicable as you can’t benefit from two separate promotions in one go. You also cannot use the subs promo on any bets you make that involve using free bets.

For any single bets you have placed, if your player is subbed off during the first 10 minutes of the match, the bookie will give you your money back, as long as the outcome has already not been determined. For any bet builder bets, if your player is subbed in the first 10 minutes, that leg of your builder will be voided, with the remaining legs re-priced.

Eligible markets

  • Player to score
  • First goalscorer
  • First and last goalscorer
  • Anytime goalscorer
  • Player to score 2 or more
  • Player to score a hattrick
  • Player to assist
  • Anytime assist
  • Player fouls
  • Player to be shown a card
  • Player shots on target
  • Player to have 1 or more shots
  • Player to have 2 or more shots
  • Player to have 3 or more shots
  • Player to have 4 or more shots
  • Player to have 5 or more shots
  • Player to have 6 or more shots
  • Player to be fouled up to 3 times
  • Player to commit at least 1 foul in the first half

Substitution Guarantee Promotions are Great Plan B

Football betting is huge in the UK, with many of us betting on our favourite teams and players on a weekly basis. However, it is never a great feeling when you back a player to perform an action, whether it is to score a goal, receive a card, or commit a certain number of fouls, leave the pitch early because of injury. The excitement you had for the bet pre-match disappears before it ever really had a chance.

With the substitution guarantee promotion, those fears are eased as your bet continues with the player brought on to replace the player you backed. It is a great fallback option and is certainly worth considering if you are a fan of football player markets.

Paul is a seasoned sports writer with extensive experience covering major events like the Super Bowl and Soccer World Cup. With years in the sports betting industry, he possesses a deep knowledge of the best bet types for various sports and maximizing betting experiences on any platform. Passionate about sports, Paul’s writing reflects his expertise in analyzing and reviewing sportsbooks, understanding bonuses, promotions, and wagering requirements to help bettors make informed decisions.