Williams had 19 points and 13 assists, dominating his former team in the final minutes as the shorthanded Memphis Grizzlies stunned the Kings, 98-94.
 Rodney Buford scored 21 points in the Grizzlies' upset of the Kings. Joe Murphy/NBAE/Getty Images from Kings-Grizzlies: 56k | 300k |
"I don't think we took it personally, he took it personally," said Kings guard Bobby Jackson. "He wanted to beat us badly. He put the team on his shoulders and made some key shots. He made some key assists and did the right things to get them the win."
"He's one of your money guys," Memphis coach Sidney Lowe said. "You have to be with him when he accomplishes a win and when he fails. You stick with him. We're in this thing for the good and the bad so I put him in there to finish the game for us."
Williams re-entered the game with 4:37 remaining and assisted on Tony Massenburg's dunk just 40 seconds later to spark a 13-2 game-ending run.
Williams drained 20-foot jumper in front of the Sacramento bench to bring the Grizzlies within 92-90 with 2:17 left and tied it moments later. He picked up a loose ball on the defensive end and ran downcourt, using a behind-the-back move to go around Bibby and make a game-tying layup with 1:56 to go.
Spanish rookie Pau Gasol gave Memphis the lead, 94-92, on a layup off a one-handed pass from Williams with 1:11 left.
Williams drained a jumper over Bibby with 42 seconds remaining and made a pair of free throws with seven seconds to go as Memphis snapped a six-game losing streak and five-game slide to the Kings.
Sacramento did not make a shot in the final 4:48, making just 4-of-6 free throws in the final 4:07.
"If you can hold a team like that to no field goals in five minutes then you've got a pretty good chance," Lowe said. "Hopefully the guys saw tonight what it takes to win."
Rodney Buford scored a career-high 21 points and rookie Shane Battier added 15 for the Grizzlies, who played without injured forwards Stromile Swift and Lorenzen Wright.
"Everyone had to pick up the slack, that's life in the NBA," Battier said, "You're always going to have some sort of injuries, but you've got to find a way and that's what we did tonight with a total team effort."
Isaac Austin started in place of Wright, the team's leading scorer and rebounder, and had six points and seven rebounds.
"Guys got hurt and there was an opportunity for me to play," Austin said. "You've got to take advantage, it's about staying ready in this league. We're going to wait until our guys get healthy and try to continue what we're doing."
Gasol finished with 15 points and Massenburg added 10 off the bench.
Peja Stojakovic scored 21 points to lead Sacramento, which had a three-game winning streak snapped and has lost three of its last four on the road.
"This is a game we should've won," Jackson said. "A team that is 1-11, for us to be a championship team, we have to beat teams like this."
Bibby scored 20 points, Doug Christie added 11 and Vlade Divac had 12 points and 12 rebounds for the Kings.
Sacramento closed the first quarter on an 18-6 run to take a 34-22 lead. It has its biggest lead, 50-35, 3:59 left in the second quarter before the Grizzlies closed the half with a 16-6 burst.
Williams nailed three three-pointers during the burst and rookie Will Solomon scored his only four points as Memphis pulled within 56-51 at the half.
"I didn't think we played very good in the second at all," Kings coach Rick Adelman said. "Even though we were up 15, we had lapses defensively. Then they got back in the game and they hung around. We had a chance to open it up and we couldn't do it."
The Kings reeled off eight straight points to take a 64-56 lead with 8:37 left in the third, but the Grizzlies repsonded with six in a row to close within a basket, but would not get the lead until Williams took over the final minutes.