Wimbledon Championships Men

Argentina's Juan Martin Del Potro returned to see off Frenchman Gilles Simon and reach the Wimbledon quarter-finals for the second time, but it was desperately hard work.

The fifth seed had led by two sets on Monday but Simon grabbed the third set before fading light ended play.

Tuesday's fourth set, played in much cooler conditions than the first three the day before, turned into a mini-epic before Del Potro eventually prevailed 7-6, 7-6, 5-7, 7-6.