Injury to Islanders' Valtteri Filppula puts his playoff status in doubtCenter ruled out for four weeks with upper-body injury3/20/2019, 3:17 PMMar 7, 2019; Ottawa, Ontario, CAN; New York Islanders center Valtteri Filppula (51) prepares for a faceoff in the first period against the Ottawa Senators at the Canadian Tire Centre. Mandatory Credit: Marc DesRosiers-USA TODAY Sports / Marc DesRosiers