Deron Williams hit a three-pointer at the buzzer in the second overtime, and the Dallas Mavericks beat Sacramento 117-116 Tuesday night for their 22nd consecutive home victory over the Kings. Williams took an inbound pass from Devin Harris with 2.3 seconds left, pump faked to get Rudy Gay to fly by him in the left corner and the ball went in after the buzzer sounded. Former Dallas guard Rajon Rondo was out with back spasms in his first visit since an acrimonious split after an ill-fated half-season with the Mavericks. Jimmy Butler had 32 points and a season-high 10 assists to lead host Chicago to its season-best fifth straight win. Pau Gasol scored 26 points with 11 rebounds, and Taj Gibson added 11 points and 14 boards as the Bulls led the entire way.