Anthony Slater of The Athletic later confirmed the news, and reports that it is due to a “left knee hyperextension” incurred during the Warriors' 112-108 loss on Monday night.
Iguodala, 35, has played admirably in these Western Conference playoffs to this point. He's averaging 11.3 points, 4.5 rebounds and 4.0 assists through 10 games.
Kerr also mentioned his group's current soreness ahead of the next matchup. Backup guard Shaun Livingston (general) and Kevin Durant (elbow) were among those he was happy to see receive some rest on Tuesday (h/t Ron Kroichick of The San Francisco Chronicle).
“That’s one of the reasons we came back later today, so the guys could get treatment this morning and have a recovery day,” Kerr said. “So hopefully everybody will be ready to roll tomorrow.”
Iguodala's main assignment in this series has been to contain James Harden, which he's done well, and not well at times. Harden's 38-point outing in Game 4 was one of the main factors in Houston's second-straight victory.
Given Iguodala's status, the Dubs may need to call more upon Durant and Klay Thompson to handle the defensive duties against this year's MVP candidate.
They each have lent a hand in the last four games.