Denver Broncos suspend receiver Brandon Marshall

Pro Bowl receiver Brandon Marshall, openly unhappy with the Denver Broncos, was suspended by the team Friday for unspecified "detrimental" conduct. The club not say in its 15-word statement how long the suspension would last.

Marshall has asked for a new contract or trade and has acknowledged he hasn't learned new coach Josh McDaniels' playbook. He was held out of last Sunday's preseason game at Seattle.

During Wednesday's warmups, Marshall walked while the rest of the team ran. He punted a ball away instead of handing it to a ball boy and swatted a pass thrown to him. His actions were caught on video and broadcast by KMGH-TV.

Marshall told ESPN on Thursday night he wasn't trying to force a trade through insubordination but that frustration got the best of him.

Marshall, who had 206 receptions the past two seasons, is also upset with what he feels was the team's misdiagnosis of a hip injury that required offseason surgery. He pulled a hamstring during the first weekend of training camp and didn't return until a week ago.

The receiver apparently was held out of practice Thursday as punishment for the churlish display, but McDaniels wouldn't discuss it afterward.

"I'm not going into it," the coach said. "If they're not ready or able, they're not out here."

Marshall's agent, Kennard McGuire, didn't immediately return a phone call Friday. McGuire was out of the country until Monday.

McDaniels said Marshall didn't play against the Seahawks because he wasn't prepared to take the field.

Marshall also missed the team's exhibition opener against San Francisco two weeks ago because he was on trial in Atlanta, where he was acquitted of a misdemeanor battery charge. Prosecutors had accused him of beating his then-girlfriend.

Marshall hoped the acquittal would give him leverage for a new deal in Denver or elsewhere. He was angered when the Broncos forbid teammates from saying they were happy for Marshall about the verdict.

That's when Marshall began spending more time between drills with the scout team and the defensive unit instead of his fellow offensive players.