"Evgeni Malkin has become an unexpected addition to the Pittsburgh Penguins' ever-growing injury list that, once again, is headed by star Sidney Crosby.

Malkin, who missed seven games earlier this season following right knee surgery, missed the morning skate in advance of Tuesday night's interconference game against the Detroit Red Wings. Coach Dan Bylsma didn't offer an explanation, and said Malkin would be a game-time decision.

Malkin practiced Monday with no apparent problems. Jordan Staal, the Penguins' all-important No. 3 center, missed that practice with an unspecified lower-body injury but took part in the morning skate.

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