Stars flock to Sydney
Serena Williams and Jo-Wilfried Tsonga will headline next month's Sydney International.
Nine-time Grand Slam winner Williams will be the top seed in the women's field, which includes five other players ranked in the world's top 10.
And world No 6 from France Tsonga, runner-up at this year's Australian Open, leads the men's field which includes wildcard entry Lleyton Hewitt.