Philadelphia 76ers guard JaKarr Sampson (9) passes between Washington Wizards forward Paul Pierce (34) and center Marcin Gortat. (Bill Streicher/USA TODAY Sports)

Paul Pierce pranced off the Wells Fargo Center hardwood, swagger recovered after draining the Washington Wizards’ third three-pointer in 66 seconds to sap all the momentum the overmatched Philadelphia 76ers had mustered, when John Wall, in a navy blue blazer and bow tie to match, greeted him with a high-five and a roar.

The spurt mushroomed Washington’s lead back to 20 points in the third quarter of their 119-90 demolition, and Wall, a spectator for the first time in more than two years, made sure to revel with teammates the entire evening. The win — without Wall and Nene in uniform — was the Wizards’ fourth straight and 45th of the season, matching the franchise’s highest total since the 1978-79 campaign.

“I thought our guys were tremendous,” Wizards Coach Randy Wittman said.

With the playoffs looming, Wall and Nene were granted the night off to rest. Ramon Sessions started for Wall and delivered his best performance as a Wizard. The 6-foot-3 combo guard accumulated just seven field goal attempts but went 7 for 9 from the free throw line and finished with a season-high 19 points and seven assists. Will Bynum, his backup, tallied 10 points and seven assists in 19 minutes after totaling just eight minutes in three previous appearances since joining the Wizards (45-33).

“It just shows how deep we are as a team,” Bynum said. “We definitely want our guys healthy and sharp come playoff time, and I think we are doing a great job doing that.”

Post Sports Live lays out what the Wizards need to fix before the team returns to the playoffs. (Post Sports Live/The Washington Post)

The guards orchestrated an offense that featured seven double-digit scorers, went 8 for 14 from behind the three-point line and assisted on 35 of 47 made field goals. Washington was shooting 71 percent early in the fourth quarter — threatening the NBA record of 71 for a game set by the San Antonio Spurs in 1983 — before settling for a franchise-record 65 percent.

“I’ll take 65 every night,” Wittman quipped.

Bradley Beal netted a team-high 21 points on 7-for-9 shooting, and Marcin Gortat took advantage of poor defensive rotations to finish with 18 points, seven rebounds and six assists. Pierce scored 10 points in 22 minutes after sitting out the Wizards’ previous three games to rest. Robert Covington topped the 76ers (18-61) with 27 points, and veteran Jason Richardson contributed 17 points off the bench.

Wall hadn’t missed a game since Jan. 7, 2013. The durability was a source of pride after his first three injury-plagued NBA seasons. It was why he played every game last season and didn’t miss any of the Wizards’ first 77 games this season despite nagging ailments ranging from migraines to sprained ankles.

The all-star point guard entered Wednesday’s slate of games ranked fifth in distance traveled (183.8 miles) and fourth in total minutes (2,757). But he finally took a seat Wednesday. The absence snapped a streak of 219 consecutive games played, a mark that includes the postseason, but will give Wall five days between games to rest.

“At this time of the year, you don’t always have the luxury of doing that,” Wittman said. “And five days of doing nothing at this time for your body can mean wonders.”

But it wasn’t exactly an inactive evening for Wall. Stat sheet in hand, Wall sat next to assistant coach Pat Sullivan and served as a spirited cheerleader alongside the injured Garrett Temple. He was the first to greet teammates as they walked to the bench for timeouts. He had at least one animated conversation with a referee. He ate some popcorn. And he enthusiastically celebrated Wizards highlights — and there were plenty.

Philadelphia forward Furkan Aldemir (19) loses control of the ball as Washington center Marcin Gortat (4) defends during the first quarter. (Bill Streicher/Usa Today Sports)

Sessions adeptly conducted the first unit by attacking the basket. His constant slashing produced a series of scoring opportunities for himself and teammates. He had 14 points and nine free throw attempts by halftime as Washington overwhelmed the 76ers’ defense with fluid ball movement and lights-out shooting.

The Wizards posted a season-high 70 first-half points — 11 fewer than they registered in a loss the last time they were in Philadelphia on Feb. 27. The output came on a scorching 72.2 percent shooting from the field. Despite making only three three-pointers, the Wizards became the 14th team to reach 70 points in a first half this season.

The only smudge on the Wizards’ masterful first half occurred less than three minutes into the contest when Hollis Thompson tripped and unintentionally undercut Beal as he released and made a jumper. Beal, who has dealt with fibula and toe injuries this season, remained on the floor in front of the Wizards’ bench for a few seconds but converted the free throw to complete the three-point play.

“When we keep it simple and move the ball, we got guys that can make plays and make shots,” Wittman said. “And that showed tonight.”