Fireworks in Denver

Posted by ESPN .com's Bill Williamson

DENVER -- It's getting interesting here.

Denver receiver Brandon Marshall and Miami linebacker Joey Porter just walked together as the two teams changed field direction for the start of the fourth quarter.

The two were separated by an official. Yes, it's getting chippy.

Marshall just had a 70-plus yard touchdown pass nullified because he was called for pushing off on a Miami defender. Marshall and Denver coach Mike Shanahan -- and the Invesco Field at Mile High crowd -- were furious with the call. It would have tied the game at 16-16.

Denver quarterback Jay Cutler just threw an interception which led to a quick Miami field goal. The Dolphins lead, 19-10. The Marshall play could loom large as tempers are flaring.