The Belgian tennis star Kim Clijsters says world number one Caroline Wozniacki must make smarter choices if she wants to back-up her top ranking with a grand slam title.
Twenty-year-old Wozniacki has come under pressure in the media for reaching the number one ranking without winning a grand slam title.
Clijsters, who reached the top of women's tennis in 2003 before finally making her grand slam breakthrough in 2005, believes the young Dane needs to cut down on her punishing schedule.
She says Wozniacki plays so many tournaments and wonders whether that's stopping her from peaking when it counts.
She says Wozniacki is still growing and believes she's close to taking out a grand slam.
The Belgian looks the player mostly capable of blocking Wozniacki's path to a maiden slam, although the Dane has so far kept the wolves at bay with some clinical tennis at the Australian Open in Melbourne.
