Greg Hardy managed to make Dallas Cowboys teammate Dez Bryant seem like the level-headed, peacemaker type.

In an unusual, on-field, in-game lashing out, Hardy broke into a Cowboys special teams huddle after the unit allowed a 100-yard touchdown return in the fourth quarter of a 27-20 loss to the NFC East rival New York Giants.

Hardy shoved at least one Dallas player. NBC’s “Football Night in America” showed a video clip of Hardy slapping at special teams coach Rich Bisaccia’s clipboard.

“I was a little surprised he was in there,” Cowboys safety Danny McCray said.

Hardy stomped around for a bit, then headed to the sideline, where he exchanged heated words with Bryant — still sidelined with a foot injury, the receiver was wearing a knit cap.

In the locker room afterward Sunday, Hardy was not in the mood to discuss what happened, issuing a half-dozen or so variations of “No comment.”

Unbeatens

Carolina’s 27-16 victory over the Philadelphia Eagles on Sunday night made the Panthers 6-0, the first time in NFL history five clubs won their first half-dozen games. New England also got to 6-0, beating the New York Jets 30-23, while three unbeatens were on a bye: Cincinnati, Denver and Green Bay. The Packers play at the Broncos next week, then at the Panthers the week after that.

No Luck

What is wrong with Andrew Luck? He returned last week from an injured throwing shoulder, but doesn’t look like the guy who not too long ago was considered a budding superstar. The Colts are only 1-4 when Luck starts this season, including Sunday’s 27-21 loss to New Orleans.

Marino’s heir

Ryan Tannehill, is playing his best football yet. Tannehill completed his first 18 passes — stretching his two-game streak to a record 25 completions in a row — and tossed four TDs in the first 16 minutes of Miami’s 44-26 victory over Houston.

Hot seats

Since Campbell replace the fired Joe Philbin, Miami is 2-0 and has outscored its opponents — OK, so the Titans and Texans aren’t really, um, good — by a whopping 82-36. Campbell’s quick success could sway other teams’ owners into a switch. Mike McCoy of San Diego (2-5 after what he termed a “pathetic” 37-29 loss to Oakland), Jim Caldwell of Detroit (1-6 after a 28-19 loss to Minnesota), or Chuck Pagano of Indianapolis (3-4).