Warriors coach Steve Kerr said on a CSN Bay Area podcast published Friday that he used marijuana for the chronic back pain he experienced the last two years.

“I don't even know if I'm subject to a drug test or any laws from the NBA, but I tried it and it didn't help at all,” Kerr told host Monte Poole. “But it was worth it because I'm searching for answers on pain.

“I've tried painkillers and drugs of other kinds as well, and those have been worse. It's tricky.”

Mavericks coach Rick Carlisle said the team isn't playing it coy with Dirk Nowitzki's strained right Achilles tendon, which has kept the veteran out 12 games. After speaking with the Mavs trainer, Carlisle thinks Nowtizki is “going to be out for a while. Progress has been made, (but) it's just not there yet.” ... The Rockets have hit at least 10 3-pointers in a league-record 19 straight games. ... ESPN reported the Nets have signed restricted free-agent forward Donatas Motiejunas to a four-year offer sheet potentially worth as much as $37 million. News services