WASHINGTON — Dwyane Wade scored 33 points, and the Miami Heat broke a franchise record with eight 3-pointers in the fourth quarter tonight to put away the Washington Wizards 118-104.

Wade and James Jones each made three 3-pointers in the final period, finally blowing open the game after the last of several Wizards comebacks. Miami made a season-high 14 3-pointers in 32 attempts, including going 8-for-13 in the fourth.

The Heat have a thing about making 3-pointers against the Wizards. The last two times they made the previous franchise mark of seven in a quarter came at Washington — the last time exactly a year ago on April 4, 2008.

The victory allowed the Heat to remain a game behind the fifth-place Philadelphia 76ers in the jostle for postseason seeding. Miami also completed a 4-0 season sweep of the Wizards, who finished 1-15 against the Southeast Division.

Having clinched a playoff berth the night before, the Heat never trailed against the worst team in the East and had a bit of celebratory flavor to their fast breaks and alley-oops — which no doubt contributed to several careless turnovers and an inability to put away the pesky Wizards until late in the game. Wade even went behind his back twice in one move — seemingly getting away with a travel — when feeding Mario Chalmers for a layup in the first quarter.

There were frequent chants of "M-V-P!" from visiting fans when Wade was at the free-throw line — which happened quite often. He was 7-for-13 from the field and 15-for-17 from the foul line. He also finished with eight assists, five rebounds and six turnovers.

Jermaine O'Neal and Yakhouba Diawara each had 16 points, and Jones matched his season-high with 13 points for the Heat.

Caron Butler scored 27 points, and Antawn Jamison had 23 points to lead the Wizards, who played without Gilbert Arenas as part of the three-time All-Star's plan to play selected games during his comeback from knee surgery. Arenas played 33 minutes in Thursday's win over Cleveland.

Brendan Haywood, in his third game after returning from wrist surgery, scored the Wizards' first 10 points and finished with 18 points and 12 rebounds.

The Heat played without forward Udonis Haslem, who cut his right thumb on the backboard while defending a layup in Friday night's win over the Charlotte Bobcats.

Miami scored the game's first seven points, setting the stage for a simple pattern the game followed the rest of the way. The Heat would build a lead, then let up and allow the Wizards back in it. Washington rallied from 11 down to tie in the first half, then later cut an 18-point lead to six, an 11-point lead to two and a seven-point lead to one.

Miami led 80-79 in the first minute of the fourth quarter when Jones hit the first of his three 3-pointers over a 4-minute span. Michael Beasley added a 3, then Wade hit a pair of 3-pointers that put the Heat ahead 102-88 with 6 minutes remaining.