The Miami Heat were well beaten by the Washington Wizards as they slipped to their third defeat in a row.
The defending champions were 25 points down at the end of the first quarter, and the Wizards continued to increase their lead to 34.
LeBron James and Chris Bosh tried to get the visitors back into the game, but the Wizards' advantage was too much.
The Chicago Bulls eventually clinched a narrow win over the Orlando Magic after three overtimes.
Joakim Noah scored a season-high 26 points to help the visitors come back from seven points down at the start of the fourth quarter.
Glen Davis could have given Magic the win inside the last 10 seconds, but his jump shot was blocked and rebounded to seal the Bulls' victory.
The Houston Rockets dominated the fourth quarter to take a win over the New Orleans Pelicans.
The visitors were down by seven points at the start of the final period, but they fought back before James Harden added the game-winning jump shot with 28 seconds to spare.
The Los Angeles Lakers lost a sixth game in a row, being beaten by a strong second-half performance by the Phoenix Suns.
Gerald Green upped his game in the second half, finishing with a season-high 28 points, while both teams had a player ejected in the second quarter.
LaMarcus Aldridge went on a nine-point rally in the fourth quarter to help the Portland Trail Blazers beat the Cleveland Cavaliers.
The two-time All-Star led a 12-0 run for the hosts inside the final 12 minutes of the meeting, helping them secure the 108-96 victory.
The Los Angeles Clippers dominated the last five minutes of their game against the Dallas Mavericks to edge to a narrow win.
The Clippers were 17 points down inside the final five minutes, but JJ Redick, Matt Barnes and Blake Griffin led a late push.
The Denver Nuggets finished strongly to clinch a win over the Golden State Warriors.
Nate Robinson scored 14 of his 24 points in the fourth quarter, ensuring that the visitors held on for the victory.
The San Antonio Spurs won their sixth game in a row, surviving a strong finish by the Utah Jazz.
Tony Parker led the team with 25 points, giving them a big enough lead to hold on against a late Jazz rally.
The Boston Celtics ended their nine-game losing streak with a win over the Toronto Raptors.
The Raptors fought hard late on, outscoring the Celtics 27-15 in the fourth quarter, but Jared Sullinger and Avery Bradley had done enough to take the win.
A last-gasp three-pointer allowed the Philadelphia 76ers to seal victory over the Charlotte Bobcats.
Thaddeus Young made the shot with just over three seconds left to play, giving the home side enough to clinch the win.
The Sacramento Kings held on to claim a win over the Minnesota Timberwolves, despite the home side finishing strongly.
Rudy Gay led the visitors with 33 points and five rebounds to give them a comfortable lead, which was enough to hold off a late charge from Kevin Love.
The Memphis Grizzlies fought hard in the final minutes to beat the Milwaukee Bucks, extending their winning run to four games.
The visitors split the workload, with Mike Conley, James Johnson and Ed Davis all among the points, as they opened up a lead in the fourth quarter, despite having been two points down heading into the final spell.
Results in full: Chicago Bulls 128-125 Orlando Magic, Charlotte Bobcats 92-95 Philadelphia 76ers, Miami Heat 97-114 Washington Wizards, Toronto Raptors 83-88 Boston Celtics, Memphis Grizzlies 82-77 Milwaukee Bucks, Sacramento Kings 111-108 Minnesota Timberwolves, Houston Rockets 103-100 New Orleans Pelicans, Utah Jazz 105-109 San Antonio Spurs, Los Angeles Lakers 114-121 Phoenix Suns, Cleveland Cavaliers 96-108 Portland Trail Blazers, Denver Nuggets 123-116 Golden State Warriors, Dallas Mavericks 127-129 Los Angeles Clippers
