Rafael Nadal sealed his place in the quarter-finals at Indian Wells after beating Reilly Opelka in straight sets to claim his 18th straight win.
Spain's Nadal won both sets by tie-break 7-6 (7-3) 7-6 (7-5) as the big-serving American Opelka held his own.
Opelka served nine aces to Nadal's six but the 21-time Grand Slam winner used all of his experience to advance.
Nadal will now face Australia's Nick Kyrgios, who received a walkover after Jannik Sinner withdrew through illness.
At 6ft 11in, Opelka produced some trademark big shots, including a raft of serves that topped the 140 mph mark.
But Nadal withstood the barrage and fired some impressive winners of his own as he targets a fourth title in the California desert.
The world number four is unbeaten in 2022, and just the second player since the beginning of the ATP Tour in 1990 to start a year 18-0 after landing a record-breaking slam at the Australian Open and the trophy in Acapulco last month.
