Warriors’ Patrick McCaw likely to miss 2 more games with ankle injury

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Warriors guard Patrick McCaw will likely miss two more games with a sprained left ankle, head coach Steve Kerr said before Thursday night’s home matchup with the Thunder.

That timeline would put McCaw, who underwent an MRI on Wednesday, back for Golden State’s game Monday against the Pelicans. With the rookie sidelined the past two contests, the Warriors’ only backup guards have been Ian Clark and Shaun Livingston. Small forward Andre Iguodala can also play in the backcourt when necessary.

“He’s almost for sure not going to play” against Oklahoma City, Kerr said of McCaw. “I won’t rule him out because I haven’t talked to the trainers yet. With a back-to-back, it doesn’t make a whole lot of sense to play him tonight or tomorrow (against the Lakers). That way we get a day off, practice Sunday and presumably he could play Monday.”

McCaw, 21, was going up for a rebound late in the first half of Friday’s win over New Orleans when he landed awkwardly. After standing up on his own power, he was helped to the sideline by Livingston.

It was a blow for a player who was perhaps the biggest revelation of training camp. After leading Golden State in scoring in the Las Vegas Summer League, McCaw averaged 8.4 points on 45.2 percent shooting from the field (40.9 percent from beyond the arc), 2.1 assists and 1.3 steals per game in the preseason.

It was enough for him to earn the final spot in Kerr’s 10-man rotation. In 19 minutes of action over the Warriors’ first two regular-season games, he had five points, three assists, a block and a steal.

Connor Letourneau is a San Francisco Chronicle staff writer. Email: cletourneau@sfchronicle.com. Twitter: @Con_Chron