Isaiah Thomas scored 26 points including the buzzer-beater at the end of regulation and Gerald Green made 10 of his 21 points in overtime as the Suns topped the Lakers 114-108 in Tuesday's preseason game.
Kobe Bryant led Los Angeles with 23 points, eight of them in last two minutes of regulation. Jeremy Lin, who missed the last three games with a sprained ankle, scored 11 of his 15 points off the bench during the fourth quarter before fouling out with 11.5 seconds left in regulation.
Shavlik Randolph helped seal Phoenix's win with a pair of free throws and a 3-pointer in the final 32 seconds.
The Lakers trailed by as many as 11 in the first half, and were down six points at the start of the fourth quarter.