"Muller, 57, joins Washington after spending the previous two seasons as an associate coach with the Calgary Flames. The Kingston, Ontario native brings 17 years of NHL coaching experience to Washington, which includes two stints with the Montreal Canadiens as an assistant coach (2006-11) and as an associate coach (2016-21) and two seasons with the St. Louis Blues as an assistant coach (2014-16). Muller also served as head coach of the Carolina Hurricanes (2011-14) and the American Hockey League's Milwaukee Admirals (2011). Muller's teams have qualified for the playoffs nine times, including two conference final appearances (Montreal: 2010; St. Louis: 2016), and have ranked in the top 10 in power-play percentage seven times. During Muller's tenure in St. Louis, the Blues owned the NHL's third-highest power-play percentage (21.9 percent).
Internationally, Muller was an assistant coach for Canada at the 2012 and 2019 IIHF World Championships, earning a silver medal in 2019 along with Capitals forwards Dylan Strome and Anthony Mantha. Prior to joining the coaching ranks, Muller appeared in 1,349 games over 19 NHL seasons with the New Jersey Devils, Montreal, New York Islanders, Toronto Maple Leafs, Florida Panthers and Dallas Stars, recording 959 points (357g, 602a). Muller, the second overall pick in the 1984 NHL Draft, won the Stanley Cup with the Canadiens in 1993."