Paris, June 4 -- Matteo Arnaldi reached his maiden Grand Slam semi-final at Roland Garros after compatriot Matteo Berrettini retired from their quarter-final clash.

The 25-year-old was leading 7-5, 5-2 when Berrettini was forced to withdraw due to a left hip injury sustained early in the match on Court Philippe-Chatrier.

Matteo Arnaldi recovered from a nightmare start, dropping his opening two service games to fall 0-3 behind.

The world No. 104, who had spent 17 hours and 42 minutes on court en route to the quarter-finals, the longest match time recorded before reaching a Grand Slam last-eight, responded strongly to take the opening set.

Arnaldi looked set for another marathon battle after his first-set recovery, but the match ended e...