Norris isn't commenting on the condition of the knee, but manager Brad Mills didn't sound confident Friday while giving up an update on Norris.
"We're going to wait and see," he said. "We're hoping things turn for the better and we're able to work things out. Obviously, we need to make that decision here pretty quickly, and we will [Saturday] at some point."
Norris threw in the bullpen on Thursday in San Francisco to test the knee.
"He still felt it a little bit," Mills said. "He said he was still a little tentative with it to where he wasn't sure if he was actually going to feel it when he landed. That's one of the reasons we're dragging our feet a little bit. We want to see if he can get that confidence back of not being tentative."