Andy Murray has apologised for withdrawing from the Italian Open midway through the tournament due to fatigue.

The Scotsman, who won his first ever clay-court titles in Munich and Madrid this month, has admitted that his body couldn't cope with training this morning.

Murray sealed a comfortable straight-sets win over Jeremy Chardy in the second round on Wednesday, but after pulling out of the tournament, today's scheduled opponent David Goffin has walked straight into the quarter-finals.

Murray tweeted: "Sorry to everyone @InteBNLdItalia for withdrawing from the event today.. I always feel bad after making decisions like this but my body is extremely tired and fatigued right now having played 10 matches in the last 12 days.

"I wanted to try to compete in the event but after warming up today I didn't feel able to compete. I hope next year I can comeback to Rome and do better. Sorry, Andy."

Murray is due to play in the French Open later this month.