PORTLAND, Ore. -- The Portland Trail Blazers continued their drive for the No. 5 playoff spot in the NBA Western Conference on Saturday night, routing the Miami Heat 110-93 at Moda Center.

Portland began pulling away in the second quarter and led by as many as 28 points in the third quarter to gain its fourth win in a row and seventh straight victory at home.

Guards CJ McCollum (24 points), Damian Lillard (18) and Gerald Henderson (17) and center Mason Plumlee (17) paced the Trail Blazers. Forward Moe Harkless added 14.

Portland improved to 41-36 going into Sunday night's game at Golden State and climbed within a half-game of idle Memphis (41-35), which is fifth in the West and will play Sunday at Orlando. The Grizzlies have lost five games in a row.

Miami (44-32) will return home to play Detroit on Tuesday. The Heat, who could wind up anywhere from third to sixth in the Eastern Conference, also have games left at home against Chicago and Orlando and on the road with Orlando and Detroit.

Center Hassan Whiteside led the Heat, minus injured stars Dwyane Wade and Chris Bosh, with 20 points and 13 rebounds, his 37th double-double of the season.

The first quarter was a grind for both teams, and it ended with Miami leading 22-20 despite shooting just 37.5 percent from the field.

Playng tough defensively at the rim, the Heat stayed with the Trail Blazers through the early parts of the second quarter.

Whiteside, Miami's 7-foot reserve, had four blocks in the first 18-plus minutes, and Portland didn't get any second-chance points until forward Ed Davis' tip-in midway through the second quarter. But the Trail Blazers fashioned a 13-0 run to take a double-digit lead.

McCollum, Lillard and Henderson combined for 32 first-half points, including 21 in Portland's 39-point second quarter.

Whiteside finished the half with 12 points and six rebounds, but the Heat had little else going for it and trailed 59-42. Miami shot 36.4 percent from the floor for the half and Portland was at 52.4 percent.

Things got even better for the Trail Blazers in the third quarter. Still active on defense, the Blazers clicked in transition against little resistance and ran their lead to 77-52 by midway through the quarter. The lead was 87-67 at the end of the third.

Portland wound up shooting 51.9 from the field and holding Miami to 38.6 percent. The Blazers were 10 of 16 from 3-point range and the Heat 6 of 19.?

NOTES: Miami G Dwyane Wade missed his second game in a row with a sore neck. He also did not play Friday in the Heat's 112-106 win at Sacramento. "He's feeling better, but not enough to play," Miami coach Erik Spoelstra said before Saturday's game. ... Both coaches were buzzing about another coach near and dear to them. Terry Porter, former Blazers guard and NBA coach, was named Friday as the men's coach at the University of Portland. "It's awesome," said Spoelstra, who grew up in Portland and played for the school. "Terry is one of my favorite people. For a lot of Portlanders, and so many of my generation, Terry was one of our favorite Blazers. It's going to be a great boost for that program. I've never had my phone go off and with texts so much about the University of Portland basketball program." Trail Blazers coach Terry Stotts said, "I'm really happy for Terry. I'm sure he'll do a great job. It's a natural fit, with his ties here and how respected he is in this area."