Britain's Heather Watson battled hard but suffered a straight-sets defeat to Victoria Azarenka in round three of the Rogers Cup in Montreal.

Watson was broken three times as she lost the first set 6-2, serving four double faults and winning less than half of points on her first serve.

She came from a break down in the second to level at 3-3 - the first time she had ever taken three games in a set against Azarenka - but the Belarusian immediately broke again to lead 4-3 and closed the match out 6-2 6-4, finishing with an ace.