Prior to joining the coaching ranks, McCarthy appeared in 527 NHL games with Philadelphia (1977-79; 1985-87), the Vancouver Canucks (1978-84), and the Pittsburgh Penguins (1983-85), registering 258 points (67g, 191a) in 10 seasons. He was the captain of Vancouver from 1979-82 and was named a starter in the 1981 NHL All-Star Game. McCarthy was originally selected by Philadelphia in the first round, 17th overall, in the 1977 Amateur Draft. McCarthy and his wife, Rhonda, have three daughters: Melissa, Meaghan and Mallory, and three grandchildren: Cannon, Pryce and Chase.
Arniel, 58, is returning to the Capitals for his third season, continuing to work with the Capitals' penalty kill. Arniel has more than 18 years of professional coaching experience, which includes serving as head coach for the Columbus Blue Jackets from 2010-12. Under Arniel's guidance, the Capitals penalty kill ranked sixth in the NHL in 2019-20 (82.6 percent), improving by 3.7 percent from 2018-19.
Forsythe, 44, returns for his 15th season with Washington and 12th as assistant coach and will continue to work with the Capitals' power play. Over the last six seasons, the Capitals have converted on 22.2% of their power play opportunities to rank second in the NHL during that span.
Murray, 40, returns for his fourth season as the Capitals' goaltending coach. Over the last three seasons, Capitals goaltenders have combined to record the third most wins (138) in the NHL. During the 2019-20 season, Murray worked with Braden Holtby and Ilya Samsonov. Holtby ranked eighth in the NHL in wins (25) and was named to the NHL All-Star Game for the fifth straight season. Samsonov posted a 16-6-2 record with a 2.55 goals-against average and a .915 save percentage and ranked second among NHL rookie goaltenders in wins.