SAN ANTONIO -- Spurs forward Kawhi Leonard had an injection in his injured right hand on Sunday and there is no timetable for his return, coach Gregg Popovich said Monday before the team's game against the Los Angeles Clippers.

"I don't know about Kawhi," Popovich said. "That one's very problematic."

Leonard injured his hand Dec. 9 against the Utah Jazz. He sat out two games, then returned for two games. But when pain from the injury lingered, he had to sit out again.

Monday was Leonard's third consecutive missed game.

Leonard told the San Antonio Express-News last week that it "isn't as bad as it sounds" and he should be back "soon."

Popovich didn't agree with that assessment.

"I don't think that's accurate," Popovich said of the reigning NBA Finals MVP. "He got another injection yesterday. One of the doctors said he's been doing hands for 40 years and it's the first time he's ever seen this injury. It's a little bit unique."