Roger Federer beat Poland's Hubert Hurkacz in straight sets to reach the semi-finals at Indian Wells.
The 20-time Grand Slam champion, 37, won 6-4 6-4 victory in one hour and 13 minutes.
The Swiss, a five-time winner in California, could next face Rafael Nadal, should the Spanish second seed beat Karen Khachanov later on Friday.
"I'm very pleased with my performance and I'm excited," said Federer, who is yet to drop a set in the tournament.
World number four Federer took charge by breaking Hurkacz, 22, in the fifth game of the match before doing so again in the third game of the second set and saving both break points on his own serve.