Iguodala has a bruise on his lower left leg, suffered when he banged knees with James Harden in Game 3.
Iguodala got treatment on his leg Monday night and again on Tuesday morning. The team said Iguodala would play only if he could tolerate the pain and soreness, as his MRI and X-rays were both clean.
"If he were close, he would play," coach Steve Kerr said before Game 4 on Tuesday night.
When asked if he's concerned about the injury lingering, Kerr replied, "He's injured, so he's not playing. We will see what happens in a couple of days."
Iguodala is averaging 8.7 points, 4.3 rebounds and 1.7 assists through three games of the series. He has played a little more than 27 minutes per game.