Australia's Bernard Tomic goes to change his racket after breaking it during his first round men's singles match against Belgium's David Goffin. – Photo by AFP

Jo-Wilfried Tsonga of France reacts after defeating Lleyton Hewitt of Australia during their first round men's singles match. – Photo by AP

View of Court 1 during the first round men's singles match between France's Jo-Wilfried Tsonga and Australia's Lleyton Hewitt. – Photo by AFP

Victoria Azarenka of Belarus serves to Irina Falconi of the U.S. during their women's singles tennis match. – Photo by Reuters

– Photo by AFP

Thomaz Bellucci of Brazil serves to Rafael Nadal of Spain. – Photo by AP

Spain's Rafael Nadal shakes hands with Brazil's Thomaz Bellucci (R) after his first round men's singles victory. – Photo by AFP

Petra Kvitova of the Czech Republic serves to Akgul Amanmuradova of Uzbekistan during their women's singles tennis match. – Photo by Reuters

Britain's Andy Murray celebrates his first round men's singles victory over Russia's Nikolay Davydenko. – Photo by AFP

Serena Williams of the United States returns a shot to Barbora Zahlavova Strycova of the Czech Republic during a first round women's singles match. – Photo by AP

US player Serena Williams slips during her first round women's singles match against Czech Republic's Barbora Zahlavova Strycova. – Photo by AFP

Lucie Safarova of the Czech Republic serves to Kiki Bertens of Netherlands during a first round women's singles match. – Photo by AP