Sidney Crosby took part in full-contact practice with the Pittsburgh Penguins on Friday but remains a doubt for game five of the playoff series against the Washington Capitals.
The two-time Stanley Cup winner has suffered a number of head and neck injuries throughout his career and missed Pittsburgh's win over the Capitals on Wednesday, a result that gave them a 3-1 lead in the series.
Crosby was absent after suffering a concussion when he was hit with high cross-check from Capitals defenseman Matt Niskanen in Monday's game three loss.
Despite a positive move in his recovery it remains to be seen if he will take part when the Penguins look to book a place in the Eastern Conference final in Washington on Saturday.
"Having gone through this, I'm aware of my body," Crosby said. "I trust the staff and process. When I'm ready I'll be back."
Coach Mike Sullivan said Crosby remains "day-to-day" and no decision over his participation will be rushed.
"We'll see how he responds and we'll go from there. Right now, his status hasn't changed at all," said Sullivan.