CHARLOTTE, N.C. — After 19 straight wins and an NBA record 27-2 start, the Boston Celtics have lost that swagger.

The lockdown defense and the poise are missing, too, as teams line up to get a shot at the defending champions.

On Tuesday, it was the lowly Charlotte Bobcats, as Raymond Felton scored
25 points and rookie D.J. Augustin added 11 of his 20 in overtime in a stunning
114-106 win that sent the Celtics to their fifth loss in seven games.

Going from unbeatable to vulnerable in less than two weeks, the Celtics were searching for answers after being left battered, bruised and angry by Larry Brown's upstart Bobcats.

"We told our team before the season it will be 82 Game 7s. Every time we play it's a Game 7 for the other team," coach Doc Rivers said. "On the nights we're not ready mentally for that, we're going to have to get lucky and play over our head to win."

It didn't happen against Charlotte, and there was plenty of blame to go around.

Paul Pierce scored 28 points, but had a key turnover in overtime. Ray Allen scored 20 points, but shot 7-for-20. Rajon Rondo committed nine turnovers. Kevin Garnett had 14 points and 13 rebounds, but shot only 7 of 18 and was called for traveling in Charlotte's decisive spurt.

And the NBA's worst offensive team had its second-best scoring night of the season. Gerald Wallace chipped in with 23 points, but it was Augustin who hit a 3-pointer and two free throws in a 7-0 run that put Charlotte ahead 108-101.

Augustin even talked some trash at the champs' expense.

"They come in and intimidate you and try to punk you," Augustin said. "But if you don't back down from them, they kind of fold."

That would have been laughable before Boston visited the Lakers on Christmas. But Boston was frustrated again at key times.

After Pierce dribbled the ball out of bounds with Charlotte leading by five in the final minute of OT, Pierce gave Augustin a slight shove, as the turnover ended Boston's chances in a physical game that saw the Celtics continue their surprising struggles against one of the Eastern Conference's worst teams.

Magic 89, Wizards 80

In Orlando, Fla., Hedo Turkoglu scored 22 points and the Magic held off a late scoring burst by Caron Butler to beat Washington.

Butler had 29 points, all in the second half, but the recently energized Wizards (7-26) failed in their bid to win for the fourth time in six games.

Orlando center Dwight Howard had his league-leading 25th double-double, with 15 points and 16 rebounds. Jameer Nelson added 14 points for the Magic, who rebounded from their loss at Toronto on Sunday.

Antawn Jamison scored 13 for the Wizards, who fell to 0-3 against Orlando this season.

76ers 104, Rockets 96

In Philadelphia, Andre Iguodala scored 28 points and the reeling 76ers returned home from a dreadful road trip to beat Houston.

The Sixers needed to escape the Lone Star State to finally defeat a team from Texas. They lost at Dallas and San Antonio in the final two games of a 1-5 road trip and had lost six of seven overall, parking them in last place in the Atlantic Division.

Heading home was the perfect tonic. Iguodala continued on his recent scoring surge and scored nine points in the third quarter to help the Sixers stretch the lead to 11.

Luis Scola led six Rockets in double figures with 18 points and grabbed 17 rebounds.

Timberwolves 94, Grizzlies 87

In Memphis, Tenn., Randy Foye scored 23 points, including the go-ahead
3-pointer with 40 seconds left, and Minnesota weathered a late rally.

Following his basket, Foye blocked O.J. Mayo's shot on the next Grizzlies possession, leading to a fast-break bucket by Ryan Gomes, and the Timberwolves secured their third straight win — their longest winning streak since January 2007.

Al Jefferson finished with 19 points, 12 rebounds and four blocks for Minnesota, which scored the final seven points, five by Foye.

Hakim Warrick scored 22 points and Mayo added 20 points, eight rebounds and five assists for Memphis.

Thunder 107, Knicks 99

In Oklahoma City, Kevin Durant had 27 points and 12 rebounds, Jeff Green scored 27 points and the Thunder held off New York.

The Thunder (5-30) continued their recent offensive surge, shooting 52.7 percent from the field — including an 11-for-16 performance by Durant. Still, they nearly blew a 23-point second-half lead before recovering.

Al Harrington scored 21 points and Chris Duhon added 18 for the Knicks
(13-20), who were coming off a victory over defending NBA champion Boston. New York, which beat the Thunder by 10 points on Nov. 14, shot 39.8 percent.

Russell Westbrook added 22 points and nine assists for Oklahoma City.

Bulls 99, Kings 94

In Chicago, Ben Gordon scored 24 points and the Bulls beat Sacramento to snap a three-game losing streak.

The Bulls converted 33 of 36 free throws, but the three they missed nearly cost them. After making its first 29, Chicago hit just four of its final seven, allowing Sacramento to stay in the game.

Trailing 97-94 after Chicago's Drew Gooden hit 1 of 2 with 9.1 seconds left, Sacramento had a chance to tie it. But Kevin Martin missed a finger roll with 4 seconds left and Thabo Sefolosha hit two more free throws to seal it for the Bulls.

Kevin Martin had 29 points for the lowly Kings, who have dropped 10 of 11.

Mavericks 107, Clippers 102

In Dallas, Dirk Nowitzki scored 34 points, including the go-ahead jumper with 37 seconds left right after he blocked a shot, and the Mavericks held on to win.

The Mavericks needed a game-ending 11-1 run to avoid being upset at home by Los Angeles, which had only eight players in uniform because of injuries and a suspension.

Los Angeles, two days after a one-point loss to Detroit, overcame an 18-point deficit before halftime and led in the fourth quarter. The Clippers have lost eight consecutive games.