down cross right results icon premium content video audio lifeNews icon-comment tick starFilled betSlip hot icon-liveCommentary refresh spinner
coral logo ladbrokes logo betway logo williamHill logo bet365 logo paddypower logo 888sport logo unibet logo
TODAY'S OFFERS
TODAY'S BOOKMAKER OFFERS
Exclusive to new customers
  • View offer
    Up to £100 in Bet Credits
    Claim here
    Up to £100 in Bet Credits for new customers at bet365. Min deposit £5. Bet Credits available for use upon settlement of bets to value of qualifying deposit. Min odds, bet and payment method exclusions apply. Returns exclude Bet Credits stake. Time limits and T&Cs apply.
  • View offer
    Bet £10 get £30 in free bets
    Claim here
    Open an account with William Hill using promo code C30, bet £10 and get £30 in free bets. Min £10 stake, win only, min odds 1/2, free bets paid as 3 x £10, 30 day expiry, free bet/payment method/player/country restrictions apply. T&Cs apply
  • View offer
    £20 Risk free first bet
    Claim here
    Open an account with Paddy Power and place your first bet on any Sportsbook market and if it loses they will refund your stake in cash, max refund for this offer is £20. Limited to one per person. If you've previously had a Paddy Power account, you will not qualify for the offer. Only deposits using Cards or Paypal will qualify. T&Cs apply
  • View offer
    Bet £5 get £20 in free bets
    Claim here
    Open an account with Ladbrokes using promo code 20FREE and place £5 of bets, you'll get £20 in free bets. 18+ New UK+Ire customers. Paypal and certain deposit types and bet types excluded. Min £5 bet within 14 days of account reg at min odds 1-2 = 4 x £5 free bets. Free bets valid for 7 days on sports, stake not returned, restrictions apply. T&Cs apply.
  • View offer
    Bet £10 get £30 in free bets
    Claim here
    Open a betting account with Coral through our site and when you place your first bet on horse racing (£10 or more) they'll give you 3 x £10 free bets. 18+. UK+IRE New Customers Only. First bet at least £10 or £10 each-way, at fractional odds totalling 1/2 or greater. Free Bets credited as 3 x £10. Free bet valid for 7 days. Free bet will not be included in any winnings. T&Cs Apply
  • View offer
    Money back as bonus up to £40 + £10 Casino bonus
    Claim here
    Money back as a bonus up to £40 if your first racing bet loses + £10 casino bonus. Min deposit £10. Money back as bonus. Wagering requirements: Sportsbook 3x at min odds of 2-5 (1.40), Casino 25x. Only one bonus can be used at a time, Sportsbook bonus must be wagered before using the Casino, unless the bonus has been forfeited. Bonus will expire after 7 days of opt-in. T&Cs apply. 18+
  • View offer
    Up to £30 in free bets
    Claim here
    Join betway, opt in, deposit £10 or more and you will get a 100% matched amount, up to £30 as free bets to split however you like. T&Cs apply. 1 x wagering at odds of 1.75+ to unlock free bet. Deposit by card or paypal only.
  • View offer
    Bet £10 get £40 in free bets
    Claim here
    Join 888sport using promo code RACING and when you bet £10, you'll get £30 in free bets PLUS £10 in free bets on any horse racing market. Min deposit £10. First bet minimum odds 1-2. Free bet credited upon qualifying bet settlement and expires after 7 days. Free bet stakes not included in returns. Deposit method and withdrawal restrictions apply. T&Cs apply.
  • View offer
    Bet £10 get £30 in free bets
    Claim here
    Open an account with William Hill using promo code C30, bet £10 and get £30 in free bets. Min £10 stake, win only, min odds 1/2, free bets paid as 3 x £10, 30 day expiry, free bet/payment method/player/country restrictions apply. T&Cs apply
  • View offer
    Bet £10 get £40 in free bets
    Claim here
    Open a betting account with Coral through our site and when you place your first bet on horse racing (£10 or more) they'll give you 4 x £10 free bets. 18+. UK+IRE New Customers Only. First bet at least £10 or £10 each-way, at fractional odds totalling 1/2 or greater. Free Bets credited as 4 x £10. Free bet valid for 4 days. Free bet will not be included in any winnings. T&Cs Apply
  • View offer
    Bet £10 get £40 in free bets
    Claim here
    Open an account with Ladbrokes using promo code RP40 and place £10 in bets and you'll get £40 in free bets. 18+ New UK+Ire customers. Paypal and certain deposit types and bet types excluded. Min £10 bet within 14 days of account reg at min odds 1-2 = 4 x £10 free bets. Free bets valid for 7 days on sports, stake not returned, restrictions apply. T&Cs apply.
  • View offer
    £50 Risk free first bet
    Claim here
    Open an account with Paddy Power and place your first bet on any Sportsbook market and if it loses they will refund your stake in cash, max refund for this offer is £50. Limited to one per person. If you've previously had a Paddy Power account, you will not qualify for the offer. Only deposits using Cards or Paypal will qualify. T&Cs apply
  • View offer
    Up to £100 in Bet Credits
    Claim here
    Up to £100 in Bet Credits for new customers at bet365. Min deposit £5. Bet Credits available for use upon settlement of bets to value of qualifying deposit. Min odds, bet and payment method exclusions apply. Returns exclude Bet Credits stake. Time limits and T&Cs apply.

John Isner could serve up a surprise against Del Potro

Nadal may also be in for a shock against Thiem

John Isner was almost always in control against last-16 opponent Milos Raonic
1 of 2

4pm Tuesday, Amazon Prime

It's the first day of of quarter-final action in the US Open and it could pay punters to expect a strong show from the outsiders in the opening last-eight action.

Even Serena Williams will need to be on top of her game in every match from this point on, but the best value could lie in taking on the big names in the men's singles.

Del Potro v Isner
There were numerous tips that 2009 Flushing Meadows hero Juan Martin del Potro may finally be well and truly back after he swept aside Borna Coric 6-4 6-3 6-1 in the last 16, but John Isner has won four of his last seven fast-court meetings with the big Argentinian and the American could extend that record.

Del Potro is the market leader by virtue of his higher rank, but the Tower of Tandil has been found wanting so many times in the quarter and semi-finals of Grand Slams that a lot of confidence in him has been lost.

Isner, meanwhile, is having his best season as a professional and it's just possible that the North Carolinian may be playing some of the best tennis in the world right now.

Even though he started slowly in his fourth-round clash with Milos Raonic, Isner was virtually in control of proceedings throughout.

After losing the opening set, he fought back to lead 2-1. Raonic then forced a deciding set, but with four of the five sets seeing one player charge into a 3-0 lead, it was Isner who timed things to perfection in set five.

That's not to say the 11th seed will be able to start as slowly against the top brass, but Isner is making few mistakes on court and, with vast experience on his side, that should only help his case.

He had to give best in his marathon Wimbledon semi-final against Kevin Anderson, but for now a first Slam triumph in his homeland would more than make up for his London loss.

Isner, one of the finest servers tennis has ever seen, is not going to receive many games from the oddsmakers on handicaps, so punters need to decide whether to back the outsider with a start or simply to win the match.

In many ways it's the biggest clash of Isner's long and distinguished career so both options can be backed.

Recommendations
J Isner +3.5 games
1pt Evs general
J Isner
1pt 3-1 BoyleSports

Nadal v Thiem
Rafael Nadal defeated Dominic Thiem 6-4 6-3 6-2 in the final of the French Open in June but it could be worth siding with the Austrian in their first hard-court clash.

Thiem has beaten the Spaniard three times on clay, which is a pretty decent effort against the best slow-court player in the sport's history.

As we know, US Open defend­ing champion Nadal is pretty good on hard courts too, although he was made to toil at times by both Karen Khachanov and Hamburg champion Nikoloz Basilashvili.

Thiem, who announced happily not long before the New York Slam started that his form was returning after a quiet period, stood well back to receive Kevin Anderson's serve in the last 16.

He'll be positioned further forward against Nadal, but this match will be won in the rallies and it would not be a surprise to see Thiem go close to matching his 32-year-old opponent.

Thiem gets a start of 5.5 games on the handicap and that looks worth taking and he could even progress to the last four.

Recommendations
D Thiem +5.5 games
1pt 10-11 BoyleSports
D Thiem
1pt 67-20 188Bet

S Williams v Karolina Pliskova
After a 6-0 opening set against Simona Halep's conqueror Kaia Kanepi, Serena Williams needed three sets to defeat the dangerous Estonian.

Things get no easier for the former long-time world number one when she meets Karolina Pliskova, who upset Williams 6-2 7-6 at this venue two years ago.

Williams will try a different game-plan this time, but Pliskova is going along nicely having recently linked up with Conchita Martinez.

The match could be close, so it could pay to expect 21 or more games to be contested.

Recommendation
Over 20.5 games
1pt Evs general

Stephens v Sevastova
Sloane Stephens, who is defending her US Open title vigorously as expected, faces what could be her toughest clash yet against Anastasija Sevastova, who may be playing career-best tennis judging by her results.

Stephens obviously is the likelier victor, but there was nothing in it when the pair met at Flushing Meadows last year and it could again be close.

Most oddsmakers give Elina Svitolina's conqueror Sevastova a start of 3.5 games on their handicaps but it could pay to take a shorter price and get another game on your side.

Recommendation
A Sevastova +4.5 games
1pt 4-6 Betway


Read Racing Post Sport every day for no-nonsense previews and expert sports betting tips


Sign up to emails from Racing Post Sport and get all the latest news and tips


Today's top sports betting stories

Follow us on Twitter @racingpostsport

Like us on Facebook RacingPostSport

American number one Isner may be playing some of the best tennis in the world
Bookmaker
Price
E.W. Terms
Sporting
BetVictor
Sky bet
Boylesport
RaceBets