OAKLAND, Calif. -- Golden State Warriors star forward Kevin Durant will not play in Game 4 of the NBA Finals on Friday night as he continues to recover from a right calf injury, but swingman Klay Thompson is expected to return after missing Game 3 because of a hamstring injury.

There was hope within the organization that Durant, who has not played since injuring his calf against the Houston Rockets in Game 5 of the Western Conference semifinals on May 8th, would be able to return to action on Friday, but Warriors coach Steve Kerr said Durant still isn't ready.

"It's just about when the training staff tells me he's ready," Kerr said. "He's been doing individual work on the court. He's been in the training room, in the weight room. He's been doing lots of different things, training staff said he's not ready to play in a game yet, so that's all."

Kerr and the Warriors were optimistic that Durant was making enough progress in his recovery to participate in some 3-on-3 scrimmages on Thursday, but that did not happen.

"It's not going to happen today," Kerr said. "I think that's something that will happen in the coming days, but not today."

Kerr said that Durant didn't suffer a setback, but the optimism surrounding his possible return was tempered during Thursday's availability.

"There was no setback," Kerr said. "So I was hoping that today would be the day when he could get out on the floor. It's not going to be today. It's going to be probably tomorrow, the following day, the next couple of days. So the hope would be that he could still make it back at the end of the series. But he did not have a setback. I'm getting asked a million questions every day, and so sometimes I might answer something that doesn't jibe perfectly with what the training staff saw that morning. So I probably misspoke last night. I thought today was a day, his day to get out on the floor, but he still has another hurdle to clear before he can do that, and so that's the next step."

Veteran guard Shaun Livingston acknowledged that the Warriors have to start preparing as if Durant's not coming back in this series.

"No question," Livingston said. "I mean it's a month, so of course, everybody in the world, on our side, is going to welcome him back when he's ready. But only when he's ready. So until then, we got to go out there like he's not playing."

As for Thompson, he is confident he will be able to produce after getting a couple extra days of rest. He suffered a left hamstring injury in the fourth quarter of Game 2, and was held out of Game 3 even after pushing the medical staff to let him play.

"My body feels really good," Thompson said. "And just that extra night of rest really helped, and---I just can't wait to get out here tomorrow."