The NHL announced Thurday that every playoff series will be a best-of-seven format after the intial qualifying round and teams will be reseeded throughout if the league is able to return with its 24-team plan later this summer.

The announcement came at nearly the same time the Pittsburgh Penguins revealed one of their players had tested positive for the avirus. The team said the unidentified player was not in Pittsburgh, was isolated after experiencing symptoms and has recovered.

So far, nine NHL players have tested positive: five from Ottawa, three from Colorado and one from Pittsburgh. The league is expected to test players daily if games resume. The NHL is still asessing health and safety protocols for what it has said could be 24 teams playing each other in two hub cities.

“We still have a lot of things to figure out, namely the safety of the players,” Winnipeg Jets captain Blake Wheeler said earlier this week. “We’ve got to make sure that our safety is at the top of that list. We don’t know what the long term effects are going to be.”