SANTA CLARA, Calif. -- Colin Kaepernick has taken much heat, both nationally and from disillusioned fans, not only for his play of late but for his comedically dismissive "presser" Wednesday.

Kaepernick is not the most talkative of players anyway, but he seems to really be taking things hard this week.

"The beauty of Colin is he's his own harshest critic," offensive coordinator Greg Roman said Thursday, "and when we have a rough game as an offense, he comes back out swinging for the fence."

Kaepernick's passer rating of 36.7 in the San Francisco 49ers' 19-3 loss to the Seattle Seahawks was the second-lowest of his career.

"We know what we have to do," he said Wednesday, without elaborating. "We played bad."

Having had such a bad game, you'd think he could not wait to get back on the field Sunday against the Oakland Raiders, right?

"Yep," Kaepernick said.

Roman has also found himself at the center of fan fury this week. A few weeks back, he said criticism from fans was "news" to him.

Now?

"When you're in our position, any time you listen to al that noise out there, you are really setting yourself up for problems," Roman said. "We've been through rough stretches before, rough patches, it just comes with the territory. It's just a fact. Sixteen teams deal with it every week.

"It's all about learning from what just happened, good or bad, making sense of that, getting that message right and moving on to the next one."