Amid ongoing drama with Khloe Kardashian, Lamar Odom denied having a drug problem and said "of course" he talks to his wife Credit: Jason LaVeris/FilmMagic

If Lamar Odom is worried about his marriage to Khloe Kardashian amid recent revelations about his drug abuse, he certainly didn't show it on Monday, Sept. 9, when a TMZ paparazzo caught him coming out of Studio City eatery Teru Sushi. Asked by the photog if he has a drug problem, the 33-year-old athlete mumbled, "Nah, I'm good."

Odom also said he doesn't think he needs professional help and is hoping to play ball this season for "anybody that's a fan." (He's currently a free agent in the NBA.)

"I mean, life is good," he insisted. "Life is good." Then, responding to the pap's question about whether he'd talked to Kardashian lately, he laughed and answered, "Of course! That's my wife. Of course."

Sources told Us Weekly, however, that Kardashian, 29, had no idea of her husband's whereabouts last week. "Khloe doesn't know where Lamar is," one insider said on Thursday, Sept. 5, the day Odom checked himself out of rehab. (He had checked in just one day earlier.) "I don't think anyone knows where he is at this point."

That certainly wasn't the case in the wee hours of Monday morning. For the first time since leaving rehab, the basketball player was photographed out and about in L.A., where he hit up sushi restaurant Wokcano before heading to a local convenience store, Famima.

He was "very upbeat," a Famima employee told Us. "He bought a piece of fruit and chatted to people outside the store for a few minutes, too. When he was asked how he was doing, he said he was 'great.'"