Defending champion Cameron Norrie defeated local hope Jenson Brooksby 6-2, 6-4 at Indian Wells on Wednesday night to give the Brit his 13th straight win in the US.
“It was really difficult. I love playing on this court, obviously,” Norrie said.
“Jenson’s so tricky and came out with a gameplan and managed to execute from the beginning and didn’t really miss too much.
“I had one slight lapse in concentration in the second set, but I am really enjoying my tennis and happy to sneak through another one.”
Norrie’s heavy hitting confounded Brooksby in the first set s he jumped to a 4-0 lead wont some bruising baseline shots.
Brooksby had a better second set and he broke wetly to establish a 3-0 lead.
But Norrie quickly re-established control and pulled it back to take out the match in 98 minutes.
“It was a little bit of cat and mouse,” Norrie said.
“I just backed myself physically, I was trying to make it that the longer the rallies went, I think the better it was for me.
“I just managed to execute and serve a little bit better than him down the stretch and I think that was the difference in that second set.”
Norrie will play teenager Carlos Alcaraz for a place in the semifinals.