Coach Scott Brooks repeatedly warned that winning every game during the Thunder's current six-game homestand would be no easy feat.
It only took just two games for him to be proven correct. The only thing more shocking than the Thunder losing was who the loss came against.
The Toronto Raptors, with the fifth-worst record in the NBA, completed their stunning two-game season sweep over OKC with a 95-93 victory Sunday night before a sellout crowd of 18,203 inside Oklahoma City Arena.
"Tough loss tonight," Brooks said, shaking his head after his team lost for just the second time in its last 11 starts.
The Thunder (45-24) came in riding a season-high six-game winning streak while the Raptors (20-49) were on a 14-game road losing streak.
Toronto routed the Thunder at home 111-99 on Dec. 3 and had gone just 11-38 between games against the Thunder. Ten percent of the Raptors' victories this season have been compliments of OKC, and the teams only played twice.
The Thunder also drops to 4-9 on Sundays this season.
The game had 17 lead changes and eight ties, but neither team shot well. Toronto misfired at 43.2 percent and OKC at 40.0 percent.
Raptors reserve guard Leandro Barbosa tied the game at 93 on a wide-open 3-pointer with 38.5 seconds left.
Barbosa taking a 3-pointer seemed like the obvious game plan. He finished with 19 points in just 14 minutes off the bench, shooting 7 for 10 from the field and 3 for 5 from 3-point range.
"When you're up three, the last thing you want to do is give them a wide-open look," Brooks said. "That was a great-executed play on their part. We didn't do a good enough job covering that."
Amir Johnson hit a 5-foot baby hook over Kevin Durant with 1.4 seconds left for the game-winner.
Durant's potential game-tying 20-footer from the left wing was an air ball that was long and was the end to a miserable shooting night for the All-Star, who went 6 for 21 from the field after going 30 for 55 in his previous three games.
"When you're shooting well, you kind of get stubborn to the fact you're missing," Durant said. "You miss one, you think the next one is going in. Or you miss three in a row, the next one's going in.
"We got some good looks. We missed a lot of open ones. End of the day you have to live with it. We just didn't finish it off."
Fellow All-Star Russell Westbrook wasn't much help, shooting 7 for 19 that included missing a 3-footer with 25.9 seconds left.
"It was just variety of things on the offensive end," Brooks said. "We didn't do a great job of attacking. We were settling for too many jump shots in the first half and even in the third (quarter)."
Thunder guard James Harden provided a lift off the bench, scoring a team-high 23 points while shooting 5 for 9 from the field and 11 for 13 from the free-throw line. He also handed out four assists.
OKC jumped to an 18-10 lead, but the momentum flipped when Toronto switched to a zone defense that baited the Thunder to take jumpers rather than continuing to penetrate.
Toronto coach Jay Triano said his team's two points of emphasis were to limit the Thunder in transition points and second-chance points, and the Raptors succeeded in both.
OKC finished with just 10 second-chance points, all coming in the second half. Toronto also outscored the Thunder 15-10 in fast-break points. Free-throw shooting, another key element to OKC's success this season, faltered in the fourth quarter.
The Thunder converted 15 of 19 in the final period (.789) and center Kendrick Perkins missed two free throws with 41.7 seconds left and OKC leading 93-90.