Top seed, defending champion Jack Sock beaten in ASB Classic 2nd round

Former world No. 1 Angelique Kerber won her sixth consecutive match of the new season, beating second-seeded Venus Williams 5-7, 6-3, 6-1 on Tuesday in a Sydney International match delayed for two hours by a thunderstorm

Defending champion Elise Mertens beat Beatriz Haddad Maia 6-4, 6-4 on Tuesday to advance the Hobart International quarterfinals

Rafael Nadal struggled with his timing and normally potent shot-making as he started his delayed preparations for the Australian Open with an error-filled 6-4, 7-5 loss to Richard Gasquet in the Kooyong Classic exhibition event Tuesday

Steve Johnson beats lucky loser as withdrawals weaken main draw at ASB Classic

Former Australian Open champion Stan Wawrinka says he's ready for this year's tournament beginning next Monday after being sidelined from competitive tennis for six months

Andy Murray says he has undergone surgery on his right hip and hopes to be back playing later this year

Two-time champion Victoria Azarenka has withdrawn from the Australian Open, with her wild-card entry reallocated to Ajla Tomljanovic of Croatia

Eugenie Bouchard's poor run of form continued when she was beaten by Belarus teenager Aryna Sabalenka at the Hobart International

Former No. 1-ranked Angelique Kerber needed to save two match points before fending off Lucie Safarova 6-7 (3), 7-6 (8), 6-2 to set up a second-round match against Venus Williams. U.S. Open champion Sloane Stephens lost her opening match of the year.