Rob Rossi of the Pittsburgh Tribune-Review reported Saturday that Malkin is experiencing symptoms consistent with someone who has a concussion.
SOG: 60 | +/-: -4
Malkin, the Hart Trophy winner last season, was injured Friday night in a 3-1 victory against the Florida Panthers. Florida defenseman Erik Gudbranson checked Malkin early in the third period, and the Penguins center fell awkwardly into the end boards.
Rossi reported Malkin is experiencing concussion symptoms, including "severe headache and mild disorientation."
The Penguins play the Tampa Bay Lightning on Sunday in Pittsburgh.
Sam Kasan of the team's website wrote that Brandon Sutter assumed Malkin's place on the second line in practice between James Neal and rookie Beau Bennett, Dustin Jeffrey moved into Sutter's spot on the third unit and Joe Vitale was centering the fourth line.
"There's nothing to expect from this point," Bylsma said of Malkin. "He's getting evaluated. We're waiting to see how he feels and reacts. He went into the boards pretty darn hard. We're not expecting any timeline to the injury or anything."