Duncan Keith (born July 16, 1983) is a Canadian professional ice hockey defenceman who is an alternate captain for the Chicago Blackhawks of the National Hockey League (NHL). Keith is known as a two-way defenceman, capable in both shutdown and offensive roles.

Following his freshman year with Michigan State University, Keith was selected 54th overall by Chicago in the 2002 NHL Entry Draft. After splitting the next year between Michigan and the Kelowna Rockets of the Western Hockey League (WHL), he spent two seasons with the Norfolk Admirals of the American Hockey League (AHL). In 2005–06, he played his NHL rookie season with the Blackhawks. Four years later, he won the James Norris Trophy as the league's best defenceman and helped the Blackhawks to the Stanley Cup. Internationally, he has represented Canada on two occasions, winning a gold medal at the 2010 Winter Olympics in Vancouver. Keith resides in Chicago with his wife, Kelly-Rae Keith. In 2011, he became recognized for his philanthropic efforts when he and Kelly-Rae created The Keith Relief Foundation, a charity dedicated to alleviating the financial and emotional burdens of families and individuals suffering from medical crisis. One of the first organizations to benefit will be the Ronald McDonald House Charities of Chicago and Northwest Indiana.

Matthew David Cooke (born September 7, 1978) is a Canadian professional ice hockey player currently playing for the Pittsburgh Penguins of the National Hockey League (NHL). Cooke won the Stanley Cup with Pittsburgh during the 2008–09 NHL season. Cooke was member of the Team Canada at the 2004 World Championships which won the gold medal. He has also played in the NHL with the Vancouver Canucks and Washington Capitals.

Cooke's playing style of intentionally attempting to aggravate opponents has earned him the reputation of one of the NHL's "pests". During his NHL career Cooke has been suspended for several much criticized hits, some involving head-shots that injured opposing players, most notably Marc Savard in 2010. Cooke was an important factor influencing NHL rule changes intended to deter such conduct. After his longest suspension in 2011, Cooke has pledged to change is style of play. Although he is no longer a member of the Vancouver Canucks' organization, he is still active in the Vancouver community with his wife as they run The Cooke Family Foundation of Hope.