J.R. Smith will be on the shelf for three to four weeks after he tore cartilage in his left knee in a loss to San Antonio, the team announced Wednesday.

Smith, who left Tuesday's game in the second quarter, was scheduled to have arthroscopic surgery on the torn meniscus later Wednesday.

"J.R. has had a good year for us," coach George Karl said after practice. "I think a lot of people have been surprised by his contribution, and he seems to be getting better every game."