PITTSBURGH — Erik Karlsson
, the leading scorer among NHL defensemen, was unexpectedly scratched for the Ottawa Senators
' game against the Penguins on Tuesday night because of an upper-body injury.
Karlsson went through the morning skate without incident, and also took part in the pregame warm-ups, only to be scratched just before game time. He was replaced by Matt Carkner
, who was scheduled to be scratched.
The 21-year-old Karlsson has 6 goals and 35 assists for 41 points in 43 games and is on pace to become only the fifth defenseman to produced 70 points in a season since the 2004-05 lockout. He also has 86 points since the start of the 2010-11 season, one more than Detroit's Nicklas Lidstrom
Karlsson is coming off one of his best games of the season. He had a goal and an assist and was a plus-5 as the Senators rallied from two goals down in the third period to beat Philadelphia 6-4 on Sunday.
Karlsson went into Tuesday's games with an 8-point lead over Brian Campbell
of Florida in the scoring race for defensemen.