John Mitchell did not participate in on-ice activities with the Colorado Avalanche on Friday.
John Mitchell has been experiencing migraines, which could put him on the sidelines when camp opens on Friday.
John Mitchell participated in an informal skate on Tuesday.
John Mitchell will not play Saturday night in Game 5 against the Wild.
John Mitchell (concussion) may resume exercises soon.
John Mitchell (concussion) is unlikely to play during the first round of the playoffs.
John Mitchell (concussion) might be able to return before the end of the first round.
John Mitchell has been diagnosed with a concussion.
John Mitchell did not play Friday night against the Sharks.
As initially speculated, John Mitchell will get elevated into a top-six role with the Avalanche.
John Mitchell may move into a top-six role on the Avalanche with Matt Duchene injured.
John Mitchell scored the game-winning goal and added an assist for Colorado in Saturday's game against San Jose.
John Mitchell will indeed suit up against San Jose Saturday afternoon.
John Mitchell (back) is expected to return on Saturday.