INDIAN WELLS, United States, Mar 14 (AFP): Former champions Roger Federer and Rafael Nadal edged closer to a blockbuster semi-final showdown at the ATP Indian Wells Masters on Wednesday with brisk fourth-round wins.
World number two Nadal overpowered Serbian qualifier Filip Krajinovic 6-3, 6-4 to book his quarter-final berth in one hour and 26 minutes.
Federer, seeking a record sixth title in the California desert, needed just 64 minutes to get past Britain's Kyle Edmund 6-1, 6-4.
Khachanov produced just one ace to the big-serving American's 12 but stretched his record over Isner to 4-0.
Fourth-seeded Federer, fresh off his 100th career title, looked poised to finish off Edmund in less than an hour.
But the Swiss great had to fight off three break points as he served for the match, just a small speed bump in a match that he took charge of early.
Hurkacz, ranked 67th in the world, sent 25th-ranked Canadian Denis Shapovalov packing 7-6 (7/3), 2-6, 6-3.
Kecmanovic became the first lucky loser to reach the last eight at Indian Wells since the ATP's Masters 1000 series launched in 1990.
Meanwhile, Bianca Andreescu's breakout season continued Wednesday as the Canadian teenager swept past two-time Grand Slam champion Garbine Muguruza and into the Indian Wells WTA semi-finals.
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