Tweets of the week: WTAers lament Montreal's power problems

CoCo Vandeweghe volunteers to play Novak Djokovic, WTAers lament Montreal's power problems and Jelena Jankovic asks a spectator to assist her with a wardrobe malfunction. Here are your top tweets of the week.

Andrea Petkovic was blown away by the Angelique Kerber/Venus Williams match, which Williams won 6-3, 3-6, 6-4.

Finally, here is Alize Cornet singing along to Gorillaz "Feel Good Inc." during her her three-set loss to Victoria Azarenka. Have a good weekend!