"Both of them said they're fine, so whatever that means, they're fine as can be," D'Antoni said.
Bryant has a bone spur in his left foot and it had been "bothering him for a while," according to a team spokesman. The injury is not related to the sprained left ankle he suffered earlier this month against the Atlanta Hawks.
"I'm playing tonight," Bryant wrote on his Facebook page Saturday afternoon. "Foot feels much better. I just pray it holds up during the game. 9 games to go. Take the Challenge. Mamba Out."
Nash is dealing with a sore right hip that caused him to miss the fourth quarter of the Lakers' loss to the Milwaukee Bucks on Thursday.
Injuries have been an on-going challenge for the Lakers this season. L.A. players have missed 145 games to injury so far this season, with 67 of those coming to the opening day starting unit of Bryant, Nash, Dwight Howard, Pau Gasol and Metta World Peace.
The Lakers will need all the help they can get as they find themselves out of the playoff picture heading into Saturday's games. They have an identical 37-36 record with the Utah Jazz, but Utah has the tiebreaker, giving it hold over the eighth and final playoff spot in the West with nine games left.
"It would be worse if it's April 18," D'Antoni said, referring to the day after the Lakers' regular-season schedule comes to an end. "We still have nine games, so we're tied. That's what the guys understand. Our goal is to win nine games. If we win nine in a row, then hopefully Utah will lose one. And if they lose two and we lose one, then that (works too). You got to go with every game is crucial and every game you have to win. You don't know what Utah is going to do. You hope they lose one."
It will start Saturday against a Kings team that won five of its last eight games, beating the likes of Chicago and the Los Angeles Clippers in that stretch.