SAN ANTONIO (REUTERS) - Within a span of six days recently, the San Antonio Spurs lost to the worst team in the National Basketball Association, the New York Knicks, and then pounded one of the best, the Atlanta Hawks.

The contrast left their coach, Gregg Popovich, questioning his team's consistency.

"Do they want to be the team they were in New York, or do they want to be the team they were in Atlanta?" he said before the Spurs faced the Oklahoma City Thunder on Wednesday.

The Spurs responded with their best point production of the season and largest margin of victory.

Guard Tony Parker led seven scorers in double figures with 21 points.

Forward Boris Diaw added 19, helping the Spurs defeat Oklahoma City 130-91.

"I thought Tony did really a fine job at both ends of the court," Popovich said. "I think, in general, we played the way we have to play to win."

San Antonio (45-26) converted 58 per cent of their shots, including 13 of 21 three-pointers.

Parker hit 10 of 14 shots.

He had six rebounds and six assists, doing all that work in 28 minutes.

Forwards Tim Duncan and Kawhi Leonard contributed 16 and 14 points respectively.

Guard Russell Westbrook and centre Enes Kanter led Oklahoma City (41-31) with 16 points apiece.

Westbrook, guarded primarily by Parker, hit 5 of 9 shots in the first quarter but missed with all seven attempts the rest of the game.

"I had great help from my teammates," Parker said. "I'm not going to stop him by myself."

One night earlier, the Spurs had lost at Dallas 94-101 after taking a 14-point lead in the first quarter.

The Mavs led by 17 in the fourth quarter. The Spurs had 13 turnovers in the second and third quarters, a thread connecting many of their defeats this season.

Parker has no explanation for why the reigning champions sometimes alternate between exceptional and awful.

"I'm still mad from last night," he said. "We played a great first quarter and then, suddenly, it just goes away.

"Then, we come in tonight and play great. This is going to be the challenge.

"We'd better find some consistency if (we) are going to do anything this year."

By beating the Thunder, San Antonio did something no other home team achieved on Wednesday - win.

Away teams won 12 of the 13 games (92.3 per cent) - the highest winning percentage for visiting sides in the history of the NBA when at least 10 games were played.