"I don't even know what happened," Westbrook added. "I was guarding Curry down in the corner, so I'm not exactly sure."
Thompson scored 27 points and Curry had 22 points and nine assists for a Warriors team that made 14 of 23 shots from 3-point range.
But it was Iguodala's difficult midrange jumper that stole the spotlight — the very reason Golden State signed the free agent away from Denver this offseason to a four-year, $48 million contract.
"He's exactly who we thought he was," Jackson said. "We're so fortunate to have him on this basketball team."
Oklahoma City outrebounded Golden State 48 to 31, but couldn't put together enough stops to match a strong offensive effort from its three big stars.
Westbrook finished with 31 points, nine rebounds and five assists, Serge Ibaka had 27 points and 13 rebounds and Durant had 20 points, eight assists and seven rebounds as the Thunder lost for the second straight night to a top Western Conference team. Oklahoma City fell at the Los Angeles Clippers on Wednesday night.
The Thunder made six of their first seven from long range, shooting more than 70 percent overall midway through the second quarter under the direction of Durant and Westbrook. But 19 turnovers cost Oklahoma City more than anything, handing the Warriors more opportunities to do what they do best: shoot.
Reserve Draymond Green gave Golden State a 100-86 lead early in the fourth quarter, twisting his way for a layup after taking a sharp pass from Thompson. The Warriors still had to hold off a furious final push from the Thunder to earn by far their biggest win this young season.
"That was a great NBA game," Thunder coach Scott Brooks said. "Playoff intensity in November. Great crowd, great atmosphere. They're a great team. Couldn't ask for a better game. Unfortunately, somebody had to lose."
NOTES: Durant was called for a technical foul in the final seconds of the first half after shoving Warriors C Andrew Bogut. ... Thunder C Kendrick Perkins wasn't with the team for the second straight game after his grandfather died Monday. He was raised by his grandparents in Beaumont, Texas. ... The Thunder fell to 33-8 following a loss since the start of the 2011-12 season, the best record in the NBA during that span. Oklahoma City was 17-4 after a loss last season.
Antonio Gonzalez can be reached at: www.twitter.com/agonzalezAP