Andy Murray's Wimbledon defence has continued with a convincing straight-sets win over Kevin Anderson in the fourth round.

The Brit, who is yet to lose a set at this year's tournament, will now face either Leonardo Mayer of Argentina or Bulgarian 11th seed Grigor Dimitrov for a spot in the last four.

Murray made only three unforced errors during a dominant opening set for the Brit, with a single service break allowing him to close it out 6-4.

The reigning champions came out swinging for the second, moving into a commanding 3-0 lead before rain forced the Centre Court roof to be closed.

Anderson clawed one of the breaks back following the minor stoppage, but that did not stop Murray going on to take it 6-3.

Murray had to save five break points in a tight third set to force a tie-break, which he eventually came through 8-6 to seal his progress at SW19.