Jelena Jankovic took an hour and 42 minutes to defeat Alisa Kleybanova 6-4 6-4 to reach the quarter-finals of the BNP Paribas Open.
The Serbian was rarely troubled and was broken only once as she saw off the plucky challenge of the 20-year-old, seeded 23rd.
Jankovic had won their previous meeting this season, in her country’s Fed Cup tie against Russia, but Kleybanova went into the clash able to draw on the confidence of two victories over her more illustrious opponent last year.
The youngster had a first-serve percentage of 83% in the first set and forced four break points, but she paid for her failure to convert any of them as Jankovic took her only opportunity – and with it the set.
Jankovic was dominant on her own serve throughout both sets, and two breaks to Kleybanova’s one earned her the second and a place in the last eight.