On Friday, in his first-ever preseason appearance, Ezekiel Elliott wasted little time proving that he belongs in the NFL. And while this must come as a welcome development to Jerry Jones -- particularly when Tony Romo left with a back injury after just three plays -- the Cowboys owner and general manager was less thrilled about his rookie running back visiting a marijuana shop in Seattle ahead of the Seahawks game.

"Well, I think that, in and of itself, the reason we are talking about it is in a way part of the learning process," Jones said, via the Fort Worth Star-Telegram. "But it's not good. It's just not good. It's just not good."

Two things: Marijuana is legal in the state of Washington, and according to TMZ, Elliott didn't buy anything in "Herben Legends," he was only seen browsing. But in a world where perceptions can trump reality -- and where marijuana is still prohibited in the NFL -- Jones would prefer Elliott avoid the obvious PR pitfalls altogether.

"Again that's a part of just really getting the big picture here," Jones explained. "No matter if you played at whatever level there is a picture here of interest. So again, I'm aware of it. I heard the report and I would know how he is. And he needs to look at that and the other thing is it's just not good."

Cowboys 2015 second-round pick Randy Gregory will miss the first 10 games of the season because of marijuana, and veteran linebacker Rolando McClain is facing a 10-game ban because of codeine and cough syrup. Meanwhile, the team has supported Elliott following domestic-abuse allegations involving an ex-girlfriend.