NBA champions Golden State have been beaten on their home court 115-107 by Detroit.
On the back of 23 points from Avery Bradley and 25 Warriors turnovers, the Pistons won to improve their record to 5-2.
Klay Thompson scored 29 points to become the 11th player in Warriors history to eclipse 9,000 career points. Kevin Durant had 28 points wit Stephen Curry 27.
Patty Mills and his San Antonio Spurs have lost their second game in succession after Victor Oladipo's late three-pointer helped Indiana snatch a 97-94 win.
LaMarcus Aldridge led the Spurs with 26 points and eight rebounds while Australian guard Mills had 10 points on 4 from 14 shooting.
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They again played without All-Star Kawhi Leonard and veteran guard Tony Parker.
Oladipo finished with 23 points and five assists while Domantas Sabonis set career highs with 22 points and 12 rebounds.
LeBron James's Cleveland have lost their fourth game in their past five past after a 114-95 defeat to New York.
Tim Hardaway Jr. scored 34 points and Kristaps Porzingis had 32 as the Knicks proved too good for the perennial Eastern Conference champions.
"It's nice to finally beat the Cavs for the first time in my career," Porzingis said.
"Hopefully we can be in the playoffs where that really matters."
James had 16 points against the Knicks but the revamped Cavaliers appear a shadow of what they used to be.
"Guys are scoring at will against us," James said.
"Our defence is pretty bad right now."
Milwaukee Bucks All-Star Giannis Antetokounmpo continued his impressive early season play with 33 points in their 117-10 win over the Atlanta Hawks.
Khris Middleton had 27 points while Antetokounmpo also had 11 rebounds and five assists as the Bucks won for the third time in their past four games.
Aussie duo Matthew Dellavedova, six points and three rebounds, and Thon Maker, three points and five rebounds, played key minutes for the Bucks.
John Wall's 19 points and 16 from Otto Porter Jr helped the Washington Wizards overwhelm the Sacramento Kings 110-83.
Elsewhere, 34 points from Kemba Walker and a 22 points and 10 rebounds double-double from Dwight Howard got the Charlotte Hornets past the Orlando Magic 120-113.
The Denver Nuggets beat the Brooklyn Nets 124-111.
