Tennis Betting Tips: Back fearless Fonseca on the 15/8 Price Boost

This year's French Open quarter-finals get underway on Tuesday 2 June, with some great matches in store on Court Philippe-Chatrier.

Below are my Tennis Betting Tips for Day 10 of Roland-Garros, featuring a couple of Price Boosts to get the juices flowing.

Price Boosts - Joao Fonseca To Win & Over 37.5 Games vs Jakub Mensik @ 13/8 15/8

Two of the most exciting young talents in men's tennis face off in the quarter-finals of Roland-Garros on Tuesday, with 19-year-old Brazilian Joao Fonseca looking to make the final four at the expense of 20-year-old Czech Jakub Mensik.

Both players enjoyed comfortable first-round wins over Frenchmen, with Fonseca beating Luka Pavlovic 7-6, 6-4, 6-2 and Mensik dispatching Titouan Droguet 6-3, 6-2, 6-4, but their following four matches have been arduous.

Fonseca came from two sets down in the second and third round against Dino Prizmic (3-6, 4-6, 6-3, 6-1, 6-2) and Novak Djokovic (4-6, 4-6, 6-3, 7-5, 7-5), respectively, before overcoming Casper Ruud (7-5, 7-6, 5-7, 6-2) on Sunday in a contest that lasted three hours and 58 minutes.

Mensik, meanwhile, was forced to a fifth set against Mariano Navone (6-3, 2-6, 6-4, 1-6, 7-6) and Andrey Rublev (6-3, 7-6, 4-6, 2-6, 6-3) in the second and fourth round, respectively, either side of a four-set success over Alex de Minaur (0-6, 6-2, 6-2, 6-3) in the third round.

Both Fonseca and Mensik have spent considerable time on court over the past 10 days, so it will be interesting to see how their young bodies hold up here. Concerns have been raised over each player's physical fitness previously, but here, against each other, that's pretty much cancelled out.

Fonseca has been the more impressive performer in Paris this year, in my opinion, beating arguably the greatest player of all time, Djokovic, in one of the standout matches of 2026, before defeating a two-time French Open finalist, Ruud, in four sets, hitting 68 and 51 winners against the Serb and Norwegian, respectively,

The Brazilian's forehands are absolutely massive, and while he possesses a weaker serve than Mensik - Fonseca only recorded two aces in the fourth round, compared to the Czech's 13 - he's shown it can be clutch, firing three successive aces to close out the match against Djokovic.

This is a difficult tie to call, and it wouldn't surprise me to see it go the distance, with half (two) of their matches at this tournament going to five sets. Over 37.5 Games looks like a solid bet, having landed in three of Fonseca's four contests so far, and two of Mensik's.

In terms of a winner, I'm edging towards Fonseca, whose forehand and defensive skills I trust more in a rally, while the Brazilian can always count on having the crowd on his side.

The youngsters have only met once before, at the 2024 Next Gen ATP Finals in Jeddah, Saudi Arabia, where Fonseca prevailed in five, albeit reduced, sets.

Price Boosts - Mirra Andreeva To Win 1st Set, Match & Over 22.5 Games vs Sorana Cirstea @ 7/2 4/1

I was tempted to back Mirra Andreeva at 13/5 to beat Sorana Cirstea 2-1 in their quarter-final on Tuesday, but this Price Boost was a winner when the Russian beat the Romanian 7-6, 4-6, 6-2 at the Linz Open in April, so I'm siding with this selection at higher odds.

Cirstea, on her final year on tour, has won all four of her matches at the French Open this year in straight sets, easing past her first three opponents Ksenia Efremova (6-3, 6-1), Eva Lys (6-3, 6-0) and Solana Sierra (6-0, 6-0) before enduring a slump in the second set of her fourth-round victory over Wang Xiyu, going from 5-2 up to 6-5 down, although she recovered to claim a 6-3, 7-6 success.

Unlike Cirstea, Andreeva has dropped a set - one - en route to the quarters, to Marina Bassols (3-6, 6-1, 6-1) in the second round, also beating Fiona Ferro (6-3, 6-3), Maria Bouzkova (6-4, 6-2) and Jil Teichmann (6-3, 6-2) in the first, third and fourth round, respectively.

French Open Odds

Andreeva, who only turned 19 years old last month, is already being touted as a potential Grand Slam champion. She's won five WTA Tour singles titles, including two WTA 1000 events, and has shown her pedigree on clay, reaching the French Open semi-finals in 2024 at the age of 17.

The World No. 8 has enjoyed an impressive clay-court season this year, too, winning the Linz Open before going deep in Stuttgart (semi-finals), Madrid (final) and Rome (semi-finals).

Cirstea has also been terrific this year, and her only defeats on clay have come to top-10 players, Coco Gauff (Madrid, Rome) and Andreeva (Linz). The 36-year-old has only failed to win a set in one clay-court match in 2026, to Gauff in Rome, so she should be able to make things competitive against Andreeva on Tuesday.

Andreeva edged a tight first set in their first-ever meeting a couple of months ago, winning a tie-breaker, before Cirstea levelled up in the second, although it was the Russian who would prevail in Linz after 31 games.

Something similar could unfold on Court Philippe-Chatrier, with Andreeva backed to pip Cirstea to a semi-final berth after the Romanian threatened to unravel against Wang on Sunday.