Toronto's Chris Bosh, centre, gets fouled in the fourth quarter while trying to knife between Thunder defenders Joe Smith, left, and Desmond Mason. (Sue Ogrocki/Associated Press)

Think the Toronto Raptors hit rock bottom when they were booed by their home crowd in a dismal loss to the Dallas Mavericks this week?

No, that came on Friday night, when Toronto suffered a humiliating 91-83 road defeat to the impossibly inept Oklahoma City Thunder.

Chris Bosh tried to prevent the disaster, scoring 22 points and grabbing 16 rebounds — half of those off the offensive glass. But the big man made just six of his 18 shots, and was beaten to a key rebound in the final 90 seconds, leading to a killer Thunder basket that sent Toronto (10-16) to its fourth loss in a row and ninth in its last 11 games.

"We were right there the whole game," said Toronto guard Jose Calderon. "We just couldn't finish. We have to keep working and believing in our team. I know it is tough.

"This wasn't our best game. It was one of our worst."

It's been a season full of defeats for the Raptors, who've dropped to last place in the Atlantic Division after making the playoffs the last two years. But Friday's loss in the opener of a six-game road trip has to go down as one of the worst in franchise history.

It's hard to overstate how poor a team Oklahoma City (3-24) is. The former Seattle SuperSonics had yet to win in the month of December, and their two previous victories this season came against Memphis and Minnesota. The former sit dead last in the Southwest Division, and the latter would be in the basement of the Northwest if they didn't have the good fortune of playing in the same division as Oklahoma City, which had been outscored by an NBA-worst 9.9 points per game heading into Friday's action.

"It felt like we won a championship," admitted forward Desmond Mason.

One of the lone bright spots for the Thunder is second-year man Kevin Durant. The paper-thin superstar-in-the-making scored a game-high 24 points and added eight rebounds Friday.

Toronto's Andrea Bargnani — on the verge of being labelled a bust in his third season after being chosen first overall in the NBA draft — had a deceiving 16 points that came on an errant 6-of-16 shooting. One of the chief culprits for a team that hit just 36 per cent of its shots on the night, the tall Italian missed a three-point try with 2½ minutes left that could have tied the game for the Raptors.

Following that, Oklahoma City's Nick Collison dove to grab a rebound under the Toronto basket that Bosh looked to have a bead on. Collison's hustle led to a Russell Westbrook bucket that put the home team up 85-81, and Jeff Green brought the house down on the next possession by sealing the game with a thunderous one-handed dunk down the centre of the lane.

"The difference tonight was guys made plays instead of standing around and seeing what was going to happen," said Collison. "We didn't just stand around and wait for something bad to happen. We made good things happen."

O'Neal leaves early

Bosh's failure to corral the ball was emblematic of Toronto's struggles on the boards this season: Friday marked the 15th consecutive game in which the Raptors were outrebounded.

The full services of Jermaine O'Neal could have helped in that department. But the six-foot-11 centre, who ranks second on the team with 7.5 rebounds per game, left the court late in first half with a sore shoulder and didn't return.

From the start, it didn't appear the Raptors got the message their jeering fans delivered late in Wednesday's 10-point loss to Dallas.

Only Bosh — uncharacteristically testy following that game, telling reporters "if I want to get booed I'll go on the road" — seemed fired up to play against a Thunder team that had lost eight in a row.

"It's good to be up here and not talk about the broken record that we've been talking about," coach Scott Brooks said of snapping the streak.

Brooks is 2-12 since taking over from P.J. Carlesimo last month.

Oklahoma City jumped out to a 22-9 lead in the first quarter and took a 46-36 advantage into the half, at which time they were holding the Raptors to a frigid 29 per cent from the floor.

Toronto's marksmanship got better, relatively speaking, in the second half, and the Raps tied the game with 4:37 left when Bargnani drove to the hoop and smartly dished to Bosh for a layup.

But Durant responded with a three-pointer to put the Thunder back in the lead, and they would not relinquish it the rest of the way.

There's no rest for the vanquished. The Raptors visit Tim Duncan and the San Antonio Spurs on Saturday night.

With files from the Associated Press