Said Gonzalez: "I saw (Swearinger's) remark, 'That's just football,' and he showed a little bit of grief for the guy -- I'm not buying it at all. Don't tell me that the rules prohibit you from hitting a guy up top. You have a whole target area above his knee up to his neck that you can hit. I've watched that play a bunch of times."
Dean Blandino, the NFL's vice president of officiating, explained Wednesday on NFL Network's "NFL Total Access" that Swearinger's hit was legal because it didn't involve the crown of the helmet.
"Keller is considered a defenseless player. He's a receiver attempting to catch a pass," Blandino said. "He's protected in two ways: He's protected on hits to the head or neck area. And he's protected on hits to the body with the crown or full head hairline of the helmet.
"Those rules do not prohibit low contact like you see here. It is a legal hit with an unfortunate result, something that the competition committee will continue to look at as we do look at all player injuries during the season. But it is a legal hit."
The league has pushed hard to prevent and address head injuries, but Gonzalez -- entering his 17th season -- said he'd rather see a tackler aim for his head than for his knees.
"You're talking about a career-ending injury. ... It should be a fineable offense, just like going for the head is," Gonzalez said. " ... I keep seeing the debate (on TV) and all these people saying, 'They're forcing defenders to go low.' No, they're not. That play was ridiculous."