Williams recovered after shooting three of 16 in regulation, when the Clippers were scoreless over the final 5:15 while the Warriors ran off 11 straight points to force overtime tied at 106-all, The Associated Press reported.
“There would be no point for me to be on the floor if I didn’t have confidence,” said Williams, who finished with 25 points.
Montrezl Harrell added 23 points off the bench and rookie Shai Gilgeous-Alexander had 18.
“It’s not about the run they go on,” Harrell said. “It’s about how we handle it. We stayed after it and kept going after them.”
The Clippers snapped a seven-game skid against the Warriors at Staples Center, where they last won on December 25, 2014.
“Unfortunately we lost, but we’ll see them again at least three more times and that’ll be different,” Klay Thompson said.
Kevin Durant had 33 points, 11 rebounds and 10 assists for the Warriors before fouling out with 3:46 left in the extra session. Thompson added 31 points, but was just five of 16 on three-pointers on a night without injured Stephen Curry.
“Everything changes without Steph,” Warriors coach Steve Kerr said. “He’s one of the best offensive players in the history of the game so you take him out and they don’t have to worry about as much.”
Golden State lost for just the third time in 14 games.
The starless Clippers improved to 6-1 at home.
The Warriors were held to 20 points in the third when they were outscored by six.
“I told our guys to empty the gun at the beginning of the third,” Clippers coach Doc Rivers said. “Our whole goal was to get more shots than them.”
The Clippers shot 60 percent and led 64-61 at halftime.