O.J. Mayo (shoulder) undergoing MRI

DALLAS -- Shooting guard O.J. Mayo is undergoing an MRI to determine the severity of the injury to his left shoulder.

Mayo, the only Maverick to play in every game this season, suffered the injury when he crashed into courtside seats while chasing a loose ball late during Tuesday’s overtime win over the Los Angeles Clippers. He played in Thursday night's loss to the Pacers with a harness on the shoulder and participated in Friday’s non-contact practice before going to the doctor.

“He’s sore,” coach Rick Carlisle said. “He’s been one of our soldiers. He’s played hurt all year long. He took a pretty good hit on it in the Clipper game late and it’s bothering him, so we’re going to get it looked at and make sure it’s something that isn’t a serious injury.

“The hope is that it’s not and he can continue to play, but we’ll see.”

Mayo ranks second on the Mavs in scoring (16.3 points per game), second in assists (4.4) and leads the team in minutes (35.7).

The 25-year-old Mayo has missed only one game due to injury or illness during his five-year career. His toughness is one of the traits the Mavs like most about the fifth-year veteran, who can test free agency again this summer if he decides not to exercise the player option in his contract for next season.

“The guy had a torn up hand in a meaningless exhibition game in a foreign country and he insisted on playing,” Carlisle said. “He has not missed a practice or a game this year. So if he’s able to play and there’s nothing in there that says we should sit him out, you do the math. I think he’s going to be there for us, but we’ll see. We have to have the doctor take a look at it and we have to take a picture of it.”