The NHL announced Monday that of the more than 250 players to participate in voluntary practices since June 8, there have been 15 confirmed positive tests for the coronavirus, which is roughly a 6% positive rate.

The league has administered more than 1,450 tests to players in that time.

The NHL also says that it is aware of 11 additional players who have tested positive for the coronavirus who have not been participating in Phase 2, which are voluntary workouts at team facilities.

According to the league, all players with positive tests have been self-isolating.