Guards Damian Lilard, CJ McCollum, Gerald Henderson and Allen Crabbe scored and made key plays Monday night as the Trail Blazers continued their recent surge and won on the road, downing Memphis 112-106 in overtime.
Lillard had 33 points, and McCollum scored 21, with six on the first three baskets of OT.
Henderson added 16, and Crabbe tallied 13 and got credit for a tip-end at the buzzer to end regulation and force the extra period (replays showed that the ball actually was knocked in by Memphis Jeff Green).
Mike Conley had 27 points for the Grizzlies, who lost center Marc Gasol late in the first quarter to a foot injury.
The game had 18 ties and 17 lead changes, with neither team leading by more than six points.
While Memphis fell to 30-22, the Blazers improved to 26-27, a half-game behind 25-25 Utah, which is eighth in the NBA Western Conference.
Portland, 8-2 in its last 10 outings, has one more game before the All-Star break a Wednesday night home date with Houston. The Rockets are seventh in the West at 27-26.