Once she solves that riddle , she 'll be a title threat for years to come .
To continue her rise to the top of women 's tennis , Halep needs to beat the best when it matters most .
Once Halep solves that riddle , Halep 'll be a title threat for years to come .
To continue her rise to the top of women 's tennis , Halep needs to beat the best when it matters most .