Copley (groin) had "muscle puled off the bone" during Game 4 of Hershey's series against Providence, JJ Reagan of CSN Mid-Atlantic reports.
Williams had 24 goals and as many assists in 80 games.
Johansson (finger) had 24 goals and 58 points along with a plus-25 rating in 82 games.
Oshie finished the 2016-17 season with 33 goals and 56 points.
Kuznetsov had 19 goals and 40 assists in 82 games.
Holtby finished the 2016-17 season with a 2.07 GAA and .925 save percentage en route to a 42-13-6 record in 63 games.
Backstrom finished the 2016-17 campaign with 23 goals and 8 points in 82 games.
Ovechkin (lower body) finished the season with 33 goals and 69 points in all 82 games.
Bowey, a blueline prospect, is still waiting to make his NHL debut after being limited by a lacerated ankle tendon this season, CSN Mid-Atlantic reports.
Alzner will not need surgery for a broken bone in his right hand, an injury that he sustained in the first round against the Maple Leafs, Stephen Whyno of the Associated Press reports.
Ovechkin (lower body) will not require surgery for knee and hamstring injuries sustained in the postseason, Stephen Whyno of the Associated Press reports.
Grubauer will leave Friday evening to join Team Germany at the World Championship, JJ Reagan of CSN Mid-Atlantic reports.
Ovechkin was specifically hampered by knee and hamstring injuries during the playoffs, Igor Eronko of Russia's Sport-Express reports.
Carey was placed on waivers Thursday, Renaud Lavoie of TVA Sports reports.
Backstrom was added to Team Sweden's World Championship roster Thursday, Isabelle Khurshudyan of The Washington Post reports.
Johansson (finger) will not play at the World Championship, Isabelle Khurshudyan of The Washington Post reports.
Kuznetsov was summoned to Team Russia's World Championship roster Thursday
Orlov was called up to Team Russia's World Championship roster Thursday
Ovechkin (lower-body) will not suit up for Team Russia at the World Championships, Isabelle Khurshudyan of The Washington Post reports.
Holtby allowed two goals on 28 shots in Wednesday's 2-0 loss to the Penguins in Game 7.
Holtby will defend the cage for the third-consecutive outing in Wednesday's Game 7 against Pittsburgh, Isabelle Khurshudyan of the Washington Post reports.
Orlov recorded an assist, two shots on net and two hits over 18:06 of ice time during Monday's Game 6 win over Pittsburgh.
Kuznetsov collected a pair of assists in Monday's 5-2 win over Pittsburgh in Game 6.
Backstrom scored a goal and added an assist in a 5-2 win over Pittsburgh in Game 6 on Monday.
Oshie scored a goal and added an assist in Monday's 5-2 win over the Penguins in Game 6.