"I believe he's getting tested again this week, and he's getting better," Pittsburgh coach Dan Bylsma said to reporters before the Penguins' game in Montreal on Wednesday. "But we're not going to progress forward until the symptoms subside."
Crosby, the NHL scoring leader, has not played since an 8-1 win over the Lightning on Jan. 5. Crosby was driven into the boards head-first by Tampa Bay defenseman Victor Hedman, but finished the game.
Crosby said Saturday he hopes the NHL takes a closer look at how blindside hits are affecting the game.
"I know it's a fast game, and I think if anybody understands it's a fast game -- I've been hit a thousand times," Crosby said Saturday. "But when you get hit like that, there's nothing you can do. There's no way you can protect yourself. Those are things that hopefully [the NHL] pays more attention to."
He began to feel worse before the Lightning game, but played anyway and flew with the team to Montreal that night before eventually returning to Pittsburgh for tests.
"You talk about head shots and dealing with them, and that's been something that's been pretty big points of interest with everybody -- GMs and players," Crosby said Saturday. "When I look at those two hits ... I mean, we talk about blindside, and that's a big word -- unsuspecting player, there's no puck there, and direct hit to the head on both of them. If you want to go through the criteria, I think they fit all those."
The Penguins have lost all three games Crosby has missed and have managed just three goals during that span.
Information from The Associated Press contributed to this report.