Not going to play in the series," Cooper stated throughout the group's Zoom call on Sunday, a day prior to the series opener.Cooper did not offer any other information on Stamkos, who has been out because having surgical treatment for a core muscle injury on March 2. Stamkos, who hails from Markham, Ont., invested the coronavirus pandemic-sparked pause recuperating, and got back on the ice before worsening the injury during voluntary exercises. I was feeling really great, then kind of struck a little rut," Stamkos said, noting the problem was related to his injury. Not going to play in the series," Cooper said throughout the team's Zoom call on Sunday, a day before the series opener.Cooper did not offer any other details on Stamkos, who has actually been out because having surgical treatment for a core muscle injury on March 2. Stamkos, who hails from Markham, Ont., invested the coronavirus pandemic-sparked pause recuperating, and got back on the ice prior to intensifying the injury throughout voluntary exercises. I was feeling actually good, then kind of hit a little rut," Stamkos said, noting the setback was related to his injury.