Blackmon (left) came on strong as a rookie, but is suspended for the first four games of 2013.
Phelan M. Ebenhack/AP

JACKSONVILLE, Fla. (AP) -- Jacksonville Jaguars receiver Justin Blackmon was escorted from the field following a heated argument with Miami Dolphins cornerback Nolan Carroll in the second quarter.

Blackmon sat out the preseason game Friday night while recovering from groin surgery, but he was on the sideline in street clothes when he started jawing with Carroll. It was unclear who or what prompted the verbal tiff.

The exchange intensified to the point where Jaguars coach Gus Bradley got involved.

Running back Maurice Jones-Drew stepped in, calmed Blackmon down and escorted him to the locker room.

Regardless of the circumstances, it's certainly not an ideal situation for Blackmon. The receiver is suspended for the first four games of the regular season for violating the league's substance-abuse policy. The suspension stems from two alcohol-related arrests in the past three years.

Now, Blackmon's trying to show he's matured.

Blackmon returned to the sideline to start the second half. He approached Bradley, and the two hugged it out before the third quarter began.

Copyright 2014 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

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