British no.1 Andy Murray moved into the Monte Carlo Tennis Masters quarterfinals as his opponent Julien Benneteau of France was forced to retire due to an ankle injury at 6-5 for Murray.

At 5-5 in the first set, Benneteau twisted his right ankle while chasing down a shot. He received medical treatment immediately, but once Murray served out the 11th game to take a 6-5 lead, the Frenchman was unable to continue playing and decided to retire.

Next up for Murray will Tomas Berdych of Czech Republic, who beat Japan’s Kei Nishikori 2-6  6-2  6-4.

Berdych started the match very slowly and Nishikori took advantage as he went up a set.

In set 2, it was a completely different Berdych, who reduced his unforced errors and as the Czech world no.7 broke his opponent twice, he levelled the match at 1 set all.

The match could have gone either way as both players had their chances in the deciding set. But after Nishikori couldn’t convert his break point opportunity at 4-4, it was the Czech who managed to take his serve in the following game to seal the match.

Also through to the last 8 is the Frenchman Gilles Simon, who defeated 7th seed Janko Tipsarevic of Serbia 6-0  4-6  6-1.