🎾 French Open Prediction 2026: Matteo Arnaldi vs. Flavio Cobolli Semifinal Best Bets

It's an all-Italian French Open men's semifinal at Roland Garros as Matteo Arnaldi and Flavio Cobolli each look for their first ever Grand Slam title appearance.

My French Open prediction for the Arnaldi vs. Cobolli semifinal backs the No. 10 seed Italian, who is the better all-around clay-court player. Cobolli is as high as a -265 betting favorite (72.60% implied odds), mostly because he is playing a surprise unseeded player in Arnaldi.

Along with my outright Cobolli prediction, I make the case for this to be a long match that goes Over the projected games total.

💰 Matteo Arnaldi vs. Flavio Cobolli predictions

Total wagered: 3 units | Max profit: 1.64 units

🎾 Matteo Arnaldi vs. Flavio Cobolli odds

French Open odds via bet365.

🆚 Matteo Arnaldi vs. Flavio Cobolli pick to win

Here's my pick to win the French Open men's semifinal, and why I'm choosing Cobolli:

Flavio Cobolli ML (-237)

Cobolli has been dominant in the role of favorite at Roland Garros recently, winning each of his last six main draw matches when favored at the French Open. He was able to win impressively in four sets against Canadian Felix Auger-Aliassime despite landing just 62% of his first serves, as he was efficient with his 10 break-point opportunities, converting half. 

Cobolli broke Arnaldi's serve a whopping 10 times in last year's second round matchup at Roland Garros, as Arnaldi couldn't find consistency with a 47% first serve percentage. He has been serving much better in this tournament and the conditions will likely suit him better this year as well. He also had back-to-back five-set wins against Raphael Collignon and Frances Tiafoe before earning a gift with Matteo Berrettini's early retirement in the last match, but Cobolli winning 10 more games than Arnaldi in their last meeting on clay is too much to ignore.

🔥 Best Matteo Arnaldi vs. Flavio Cobolli prop pick

Over 37.5 games (-110)

This wager is as much a product of going for value as all other top sports betting sites have an O/U of 38.5 games, as well as how much I believe that Arnaldi being on court for less than two sets in the quarterfinal will help keep him fresh and narrow the talent gap that exists in this matchup.

Cobolli has covered the game spread in each of his four ATP semifinals played on clay. But there is a big difference between those smaller circuit events against fewer of the world's top players, and dominating a fellow countryman on this stage in one's first-ever Grand Slam semifinal appearance.

The Over has cashed in each of Arnaldi's last seven matches, and at least four sets have been played in each of his last seven at the French Open.

Arnaldi is familiar enough with Cobolli's game that he knows not to challenge his elite forehand too much. With the game spread set relatively low at -4.5, that gives off the hint that oddsmakers are confident in the underdog taking at least one set (Arnaldi has -334 odds carrying a a 76.96% implied probability at bet365 to win at least one set). 

Matteo Arnaldi vs. Flavio Cobolli H2H stats

📺 French Open semifinal match info: Matteo Arnaldi vs. Flavio Cobolli

• When: Friday, June 5
• Time: 1 p.m. ET
• Where: Roland-Garros (Paris)
• How to watch: TNT Sports