The New York Knicks chalked up their ninth straight win with Julius Randle scoring 31 points as they beat the Toronto Raptors 120-103.
New York's victory saw them move to fourth in the Eastern Conference as the regular season reaches its end in May, with Randle's contribution aided by RJ Barrett's 25 points and 12 rebounds.
The Sixers missed the chance to close the gap to the Nets, losing their fourth game in a row.
They were downed 132-94 by the Milwaukee Bucks with Giannis Antetokounmpo scoring 24 points, while Philadelphia were without Joel Embiid and Ben Simmons.
A LeBron James-less Los Angeles Lakers fell to the Dallas Mavericks 108-93 after a second-half comeback.
The Lakers went into the break 58-46 up, but Dallas turned it around with Luka Doncic finishing with 18 points and 13 assists and Anthony Davis scoring 17 for LA in his second game back from injury.
Elsewhere, the Indiana Pacers defeated the Detroit Pistons 115-109 and Bam Adebayo scored 20 as the Miami Heat beat the Chicago Bulls 106-101.
Zion Williamson hit 33 points but the New Orleans Pelicans were clipped by the San Antonio Spurs 110-108, the Minnesota Timberwolves saw off the Utah Jazz 101-96 and the Denver Nuggets beat the Houston Rockets 129-116.