The Warriors defeated the Detroit Pistons 113-109 at Chase Center on Friday, but they lost key players.
The Warriors revealed after the game that 38-year-old Chris Paul will have surgery next week after breaking his left hand in the third quarter.
Paul's comeback is unscheduled, hurting the Warriors' depth.
After missing a 3-pointer, Paul went for an offensive rebound and was injured. After colliding with Pistons player Jaden Ivey, he winced and went to the Warriors' locker room.
Warriors coach Steve Kerr was asked about Paul's injury immediately after the game.
"Yeah, it's hard," Kerr told reporters. "I feel sorry for Chris. He's undergone two hand surgery, I think. Perhaps it was the other way. I was scared when I saw him holding it, so I just heard after getting up. So I feel awful for Chris, but players will step up and play, and we must press on without him."
In his first Warriors season, Paul averaged 8.9 points and 7.2 assists in 32 games. Paul started the last four games after starting much of the season on the bench and leading the second unit.
Paul's injury comes days after Gary Payton II's Grade 2 left hamstring strain sidelined him for three weeks.