DALLAS — In a startling set of circumstances, owner Mark Cuban said Gersson Rosas was on a 90-day trial period in his job as general manager of the Dallas Mavericks.While that arrangement sounds a bit unusual, Rosas decided the Mavs weren’t a fit for him so he stunningly turned in his resignation Tuesday — exactly 90 days after he signed his contract on Aug. 1.“He kind of had the option to stay 90 days and see what happens,” Cuban said before Wednesday’s season opener against the Atlanta Hawks. “He made his choice — I wish him the best.“He’s a good guy. I like him. We move on.”Sources said Rosas was seeking more power within basketball operations. Cuban was asked why he hired a general manager if he wasn’t going to allow him to be the manager.“I’m not big on titles,” Cuban said. “That was the title we wanted.“We pretty much let people pick their title. Notice we didn’t have an official general manager before.”When asked if Donnie Nelson, the Mavs’ president of basketball operations, will pick up the general manager duties now that Rosas is gone, Cuban said: “They were already his.”Cuban also said he will not bring in another general manager this season.Coach Rick Carlisle had nothing but high praise for Cuban and Nelson.“The best I’ve ever been with,” Carlisle said. “We were strong to start with and we’re still strong, so that’s where we are.”Asked whether he was surprised Rosas bolted, Cuban said: “A little bit, but that was his choice. It was part of the bargain.“It just didn’t work out. Smart guy, good guy. I wish him the best. It just didn’t work.”Stern’s parting gift?Before NBA Commissioner David Stern retires in February, Mark Cuban might have a parting gift for him.“Maybe I’ll get one fine...,” Cuban said Wednesday. “Like on his last day, just because we’re close like that, and give him coffee money and travel money.“And depending on where he wants to go with what I do and how much I get fined, so hopefully he’s a domestic traveler. But I’ll have to break Adam [Silver] in when he comes in. I’ve been working on that.”Silver will replace Stern on Feb. 1 after Stern’s 30 years as commissioner.“If it would have been Valentine’s, I could have worn a heart,” Cuban said. “I still have my David Stern University shirt.”Stern’s office has fined Cuban nearly $2 million since Cuban purchased the Mavs in January 2000 from Ross Perot Jr.Mavs extend sellout streakThe Mavericks extended their sellout streak to 474 games Wednesdayagainst Atlanta.“We got there by hook or crook,” Mark Cuban said. “Everybody always gives us a hard time, but Mavs fans are amazing.”The Mavs have the longest active sellout streak among the four major pro sports. The streak started on Dec. 15, 2001.“I like having people in the building,” Cuban said. “That’s more important to me than the money. “The sixth man is the sixth man.”Cuban said Saturday’s game against Memphis is already sold out, but tickets remain available for Tuesday’s game against the Los Angeles Lakers.
Dwain Price, 817-390-7760 Twitter: @dwainprice