Error-prone Serena Williams makes quarters at Indian Wells (Yahoo Sports)

Struggling with her serve and a rash of errors, Serena Williams overcame a slow start to beat Sloane Stephens 6-7 (3), 6-2, 6-2 in the fourth round at the BNP Paribas Open on Tuesday, extending her winning streak to 14 matches. Williams committed 52 unforced errors and had nine double faults to go with 13 aces and 31 winners in the up-and-down match played in 90-degree (32 Celsius) heat. ”Little off this week, but like I said, I’m just happy to be here.” Williams set up match point with a 128-mph ace and won when Stephens dumped a backhand into the net, one of her 36 errors. ”The crowd has been really great,” Williams said.