The Dallas Mavericks' playoff hopes suffered another setback after James Harden inspired the Philadelphia 76ers' fourth-quarter charge on Wednesday.

The Mavs, who had lost seven of their previous 10 games coming into the contest, led 91-89 at three-quarter time at Wells Fargo Center before the home side rallied to triumph 116-108, clinching their 50th win of the season.

Harden provided the assists for all of Philadelphia's points during a 10-0 run that flipped the contest, condemning the Mavs to a 37-40 record and leaving them in danger of missing the playoffs and play-in tournament in the Western Conference. Dallas failed to score in the final 3:18 of the game.

Joel Embiid returned from a one-game, calf-injury-enforced absence to boost his MVP aspirations with 25 points and nine rebounds, while Harden had 15 points and 12 assists.

Harden's partnership with Embiid was on full show, with the pair holding the NBA's best single-season record over the past 25 years for assists by one player to another, averaging 4.8 per game, ahead of Sacramento Kings duo Rajon Rondo and DeMarcus Cousins (4.0 in the 2015-16 season).

For the Mavs, Luka Doncic had 24 points, 10 rebounds and eight assists, while Kyrie Irving added 23 points.

Philadelphia's 50th win from their 76th game of the campaign marks the fewest amount of games required to reach that mark in franchise history since 2001.

The 50-26 76ers are third in the East, behind the Milwaukee Bucks (55-21) and the Boston Celtics (52-24).

The Bucks routed the Indiana Pacers 149-136 led by Jrue Holiday's career-high 51 points and a Giannis Antetokounmpo triple-double.

Kings end NBA's longest playoff drought

Sacramento ended their 17-year playoffs wait, the longest drought in NBA history, thanks to a 120-80 victory over the Portland Trail Blazers.

The Kings pulled away with a lopsided 70-34 second half, led by Domantas Sabonis (15 points and 12 rebounds) and De'Aaron Fox (18 points and six assists), while Keegan Murray passed Donovan Mitchell for the most threes made by a rookie (188) in his 13 points.

Sacramento clinching their playoff spot came amid a chaotic night in the West, with Jalen Williams' buzzer-beating tip-in earning the 10th-placed Oklahoma City Thunder a 107-106 win over the Detroit Pistons. OKC occupy the final play-in spot.

Russell Westbrook scored 36 points as the fifth-placed Los Angeles Clippers ended the second-placed Memphis Grizzlies' seven-game winning streak with a 141-132 victory, while the taunts continued as the Los Angeles Lakers beat the Chicago Bulls 121-110.

Durant returns as Suns firm up fourth seed

Kevin Durant made his long-awaited home debut as he returned from a 10-game absence due to a sprained ankle, but he was rusty as the Phoenix Suns overcame the Minnesota Timberwolves 107-100.

Durant shot five-of-18 from the field for 16 points with eight rebounds and four assists. Devin Booker top-scored for the Suns with 29 points on eight-of-18 shooting from the field.

The 2014 MVP Durant shot two-of-four from three-point range, both in the fourth quarter, holding off the Timberwolves who drew level in the final period, with the win helping the Suns improve to 41-35 to sit fourth in the West.