Tight end Zach Miller suffered a concussion, his second of the season, on that hard hit along the sidelines in the game's final minutes.
"We'll be as cautious as we have to be," Cable said. "And what I mean is we'll protect the athlete and do all the testing and due diligence in terms of his return."
Several Raiders, most notably rookies Mike Mitchell and Louis Murphy took exception to what they said was Washington cornerback Fred Smoot celebrating over a fallen Miller and talking trash.
"It was a good football play, a good hit, a good, solid hit you'd be excited about, but once you realize a guy's hurt, you leave it alone," Mitchell told CSN California. "Even say a prayer for him, that's what I would do. That was a classless act to point at him and continue to get excited, and then to do it right in front of our sideline, who do you think you are?
"I understand you've been in this league a long time, I'm a rookie, but I haven't seen you do anything. I've been watching this game a lot time, I see you talk a lot. I'm not really a talker, I'm a doer. I stay right here in Oakland, I live in Florence, Kentucky, I travel a lot. Hopefully I can see you and we can talk about it."
Cable said he had no issue with his players sticking up for a teammate.
"I liked the fact that guys stood up for their teammates," Cable said. "I have no problem with that. In fact, that's one of the issues that we need more of sometimes, about playing for each other, sticking up for each other, staying strong together, all those things.
"That's just another example of it. I told the team this earlier, I was glad to see our approach to how what happened with that hit, the way those guys were talking and all that. It's like family. You got to take care of your family."
Cable was also asked if he would send tape of the tackle, which looked like an illegal helmet-to-helmet hit, to the league offices?
"You know, after seeing it on film, yeah, it was a shot, it was a free hitter and all that," Cable said. "But I think the league will take care of that if there's going to be an issue with it, definitely."