The New Jersey defenceman skated hard, took shots and had no post-concussion problems.
"I'll have a better idea after the skate tomorrow," Niedermayer said. "I feel pretty good.
Scott Niedermayer skated 40 mins on Tuesday and may play Game 7.(CP Photo)
"Like I said, I can't say exactly how I feel because it's afterward, after you do things like this, that you feel it."
The series ends Wednesday in New Jersey, and Devils coach Larry Robinson said he would wait until a few hours before the 7 p.m. EDT faceoff (CBC) to decide on Niedermayer's availability.
"If he is out there, it's because he's not risking his health in this game," Robinson said.
Niedermayer was knocked out in Thursday's Game 4 when Domi, a Toronto forward, hit him with a vicious elbow to the head.
Domi was suspended by the NHL and must sit out at least the rest of the playoffs.
Niedermayer said Monday that Domi planned the attack in retaliation for a hit from the New Jersey defenceman.
Niedermayer cut Domi over the bridge of the nose with his stick in Game 2 of the series and was not penalized.
Niedermayer never had a concussion before Domi's attack. He has spoken with his brother, Rob, who plays for the Florida Panthers and has had several concussions.
"I asked what he felt like after riding the bike, like yesterday, and after the skate, like today," Scott Niedermayer said. "He told me what to look for and what to expect if you feel good or don't feel so good."
Devils goalie Martin Brodeur said it was good to see Niedermayer skate, but hopes the defenceman plays only if he gets clearance from doctors.
"If he is not ready, they are not going to play him," Brodeur said. "One game is not going to make up a career.
"It's really important that he take his time. You see a lot of head injuries cost careers.
"Yes, Game 7 is important, but we have other guys who can step up like they did yesterday. If the doctors clear him, good, but we can't count on that."
Devils captain Scott Stevens said Niedermayer shouldn't play if there is any doubt about his health or stamina.
"You can't go out there in the first period and play five minutes and say, `I can't play anymore,"' Stevens said.
By Tom Canavan
