French Open: Carlos Alcaraz is Stefanos Tsitsipas' 'toughest opponent' on clay right now, says Alex Corretja

Alex Corretja thinks it is going to be «very difficult» for Stefanos Tsitsipas to produce a quarter-final victory against Carlos Alcaraz at this year's French Open. Tsitsipas has lost all four matches he has played against Alcaraz, including the Barcelona Open final in April which the Spaniard won 6-3 6-4. Ad But Tsitsipas has enjoyed a strong Roland-Garros campaign this year, dropping just one set in his four matches and reached the quarter-finals after a convincing 7-5 6-3 6-0 win over Austrian Sebastian Ofner.

Roland-Garros'What a performance' — Tsitsipas books quarter final place with win over OfnerYESTERDAY AT 19:46 Nevertheless, Corretja thinks the world No. 5 will see Alcaraz as his «toughest opponent on clay» right now because of their meeting in Barcelona. He told Eurosport: «I think Stefanos feels more calm on the court, more aggressive and his forehand is working way better than before.

»Mentally he's more prepared than in Barcelona which in my opinion he was not as happy on the court as he used to be. «But this is different tennis, this is a different tournament but he will need to go out there thinking he can do it because he's a real champion. »But I think he'll have the feeling in his mind that Carlos is his toughest opponent right now on clay." Rune in double-bounce controversy — 'The umpire has made a huge mistake' 'Careless' — Henman on doubles pair being disqualified for hitting 'very upset' ball kid Alcaraz has only dropped one set at the French Open this year, too, but believes he will find Tsitsipas his hardest test so far at this year's tournament.