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Rally back with a 50% stake returned!

Get ready to rally through four thrilling weeks of top-tier tennis action with Second Serve!

Place a Tennis ACCA—and if it doesn't land, we'll refund 50% of your stake as an ACCA Free Bet (up to £10), a chance to serve again!

You’ll be able to benefit from Second Serve offers once per week:

  • Week 1: 21st May – 27th May
  • Week 2: 28th May – 3rd June
  • Week 3: 4th June – 10th June
  • Week 4: 11th June – 17th June

We're serving this up during some of the year's most exciting tennis moments, including:

  • Roland Garros: 25th May – 8th June – where Novak Djokovic, Carlos Alcaraz, and Jannik Sinner will battle for glory on the iconic clay courts of Paris.
  • Hamburg Open: 18th – 24th May – featuring clay specialists and rising stars.
  • Gonet Geneva Open: 18th – 24th May – where players like Casper Ruud and Taylor Fritz are expected to shine.

How it Works:

  • Opt-in to the promotion.
  • Place a Tennis ACCA with at least 3 selections, minimum odds of 4.0 (3/1).
  • If your bet loses, get 50% of your stake back as an ACCA Free Bet (up to £10).
  • Repeat weekly—because even legends need a second serve.

Second Serve has you covered!

Rewards Page
Terms and Conditions
  • The promotion runs from 21st May 00:01 GMT+1 until 17th June 23:59 GMT+1
  • Players can claim this offer once per week during the promotional period.
  • Weekly periods:
  • Week 1: 21st May 00:01 GMT+1 until 27th May 23:59 GMT+1
  • Week 2: 28th May 00:01 GMT+1 until 3rd June 23:59 GMT+1
  • Week 3: 4th June 00:01 GMT+1 until 10th June 23:59 GMT+1
  • Week 4: 11th June 00:01 GMT+1 until 17th June 23:59 GMT+1
  • Opt-in required to participate.
  • Only Pre-Match Tennis Acca bets qualify.
  • Your Tennis Acca must have at least 3 selections and minimum odds of 3/1 (4.0).
  • If your bet loses, you’ll get back 50% of your stake as a Tennis Acca Free Bet.
  • Maximum refund: £10 Free Acca Bet.
  • Only real money bets qualify.
  • Bets placed with Free Bets, Bonus Money, Uniboost, or other boosts do not count.
  • Your refunded Tennis Acca Free Bet will be credited once your qualifying bet has settled.
  • The Acca Free Bet must be used on tennis with minimum odds of 4.0.
  • The Free Bet expires after 7 days.
  • Unibet reserves the rights to amend or terminate the bonus at any time.
  • Unibet terms and conditions always apply for this campaign.
  • These Promotion Terms and Conditions including any applicable instructions on www.unibet.co.uk ("Promotion Terms") apply to all Unibet promotions. By entering you accept and agree to be bound by these Promotion Terms. In addition, Unibet’s Terms and Conditions and Rule Books ("Standard Terms") also apply (available at www.unibet.co.uk). In the event of any difference between these Promotion Terms and the Standard Terms, these Promotion Terms will prevail.
  • 1. This bonus, offer or promotion (“Promotion”) is available to individuals aged 18 years and over who have fully registered as customers of Unibet.
  • 2. No employees of Unibet and its affiliated companies, or family members of employees and affiliated companies, may take part in Promotions.
  • 3. Unless confirmed otherwise by Unibet in writing: (i) Promotions are available once only to any registered account, which shall mean no more than one bonus per user, IP address, computer device, family, residential address, telephone number, credit or debit card and/ or e-payment account, e-mail address, and environments where computers are shared (university, fraternity, school, public library, workplace, etc.); and (ii) Promotions cannot be used in conjunction with, or to qualify for, any other Unibet.co.uk promotional offer.
  • 4. Unibet reserves the right acting reasonably and without prior notice and in accordance with its eligibility requirements, bonus abuse policy and internal trading risk policy to:
  • withhold, restrict or cancel this Promotion from individual account holders; and
  • reclaim any bonus funds, enhanced payments or winnings from bonus funds.
  • 5. Promotional offers are intended to enhance a player’s enjoyment of the games and any attempts to manipulate or abuse a bonus or abuse the spirit of this promotion will not be tolerated and may lead to forfeiture or blocking of any points, bonuses, prizes and/ or winnings under a promotion as well as an immediate exclusion from the promotion and future Unibet promotions and/ or closing of the account. Unibet considers the following play to be in breach of this term:
  • Betting more than 30% of the initial bonus amount in any one game round (i.e. slot/ roulette spin, blackjack hand etc.) until wagering requirements have been met. For example, a £100 deposit bonus = £30 maximum bet per game.
  • Betting more than £15 per spin on slots while using bonus funds.
  • Using one type of game to build a balance (e.g. large bets on a single number at roulette) then switching to another (e.g. slots) for the purpose of meeting wagering requirements.
  • Exploiting promotions by placing bets or wagers where there is no or limited risk of loss to the customer, other than where the absence of risk is a key part of the promotion. By way of example and without limitation using low risk methods such as wagering both Red and Black in Roulette, wagering both Player and Banker in Baccarat, covering more than 70% of outcomes (e.g. 26 or more numbers on a Roulette table).
  • Playing a game that has collectable features (including, by way of example and without limitation, sticky wilds (Scarab) or a progress bar (dynamite riches megways), building collectable features using bonus funds and, subsequently (after discharging a related wagering requirement), depositing real funds and playing the game again to release the collectable features as cash.
  • 6. Except as outlined in these Promotional Terms, amendments to Promotions will not be made after you are opted in, unless you accept any such amendments.
  • 7. Unibet may, at any time, make minor amendments to this Promotion to correct typographical errors or to improve on clarity or customer experience and may cancel this Promotion for legal or regulatory reasons.
  • 8. Unless otherwise specified in writing, in the event that you are required to travel to take part in any event, you are responsible for making all your own arrangements (including insurance).
  • 9. Unibet accepts no responsibility whatsoever for system or connection problems that might affect any end user during any of these Promotions.
  • 10. Unibet’s decisions in respect of any matter(s) concerning a Promotion are final, subject always to your right to refer a decision to Unibet’s complaints policy as described in the Standard Terms.
  • 11. This Promotion is operated by Platinum Gaming Limited a company registered in Gibraltar with its registered office address at Sovereign Place, 117 Main Street, Gibraltar, GX11 1AA, Gibraltar.
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© Copyright 2025, Unibet. All rights reserved
Unibet is not affiliated or connected with sports teams, event organisers or players displayed on its websites and/or mobile apps or (ii) to any mobile brands.
This website is operated by Platinum Gaming Limited whose registered office is at Sovereign Place, 117 Main Street, GX11 1AA, Gibraltar.
Platinum Gaming Limited is regulated and licensed by The Great British Gambling Commission (under Account number 45322 ), with respect to customers registered in Great Britain, (ii) The Irish Revenue Commissioner (licence number 1013174) for sportsbook customers in Ireland, and for all other products and jurisdictions; (iii) The Government of Gibraltar (under Licence numbers 091 and 092), and the Gibraltar Gambling Commissioner under the Gambling Act 2005.