Serbia's Jelena Jankovic boosted her US Open hopes with a brisk 6-4, 6-2 victory over World No 1 Dinara Safina on Sunday in the final of the $2million WTA Cincinnati Open.

"My smile is back and I'm having fun playing the matches," said Jankovic, who started the year atop the world rankings but has seen her status slip with a series of lacklustre results. "This is what I missed. I missed this for maybe seven months this year."