SANTA CLARA, Calif. -- 49ers coach Jim Harbaugh offered a parting shot at Packers linebacker Clay Matthews: Slapping is not the tough-guy way.
Harbaugh says Matthews threw one punch and slapped 49ers left tackle Joe Staley when they tussled following Matthews' late hit on quarterback Colin Kaepernick in the second quarter of San Francisco's 34-28 season-opening win against Green Bay on Sunday.
"I think that young man works very hard on being a tough guy," Harbaugh said Monday of Matthews. "He'll have some repairing to do to his image after the slap."
Matthews promised leading up to the game that Green Bay would target Kaepernick after he ran for a quarterback-record 181 yards to beat the Packers in the playoffs eight months ago, and Matthews did just that. On the play, he threw his right arm around the lower part of Kaepernick's neck.
"If you're going to go to the face, come with some knuckles, not an open slap," Harbaugh said Monday.
Matthews admitted Sunday that his late hit "wasn't very smart."
"I had already committed to hitting the quarterback. I guess I should have figured he was going to step out of bounds," Matthews said. "But it's nothing personal. I went up to him later and was joking around with him. But not a very smart play. And that's kind of the end of that."
Kaepernick said after the game, "If intimidation is your game plan, I hope you have a better one."