The 2010–11 women's national hockey team will represent Canada in various tournaments during the season. The team will attempt to win the gold medal at the Women's World Championships. The head coach is former National Hockey League player Ryan Walter. National team News and notes September 14: Four members of its 2010 Olympic gold medal-winning National Women's Team: Becky Kellar, Gina Kingsbury, Carla MacLeod and Colleen Sostorics have announced their retirements from international hockey. October 5, 2010: Tessa Bonhomme was one of several athletes selected to participate in an all-athletes episode of Wipeout Canada. March 15: Jennifer Botterill announces her retirement from international hockey. She was one of just four Canadian players to participate in the first four Olympic women's hockey tournaments. Her 184 games for Team Canada rank third all-time behind Hayley Wickenheiser and Jayna Hefford. She is fifth on the all-time scoring list with 65 goals and 109 assists for 174 points. Four Nations Cup September 21: Former NHL player Ryan Walter has been named the head coach for Team Canada at the 2010 Four Nations Cup. Assisting Walter will be current Minnesota Duluth assistant coach Laura Schuler and Ryerson Rams head coach Stephanie White. Roster Schedule IIHF World championships Canada will attempt to win the gold medal as they compete in the 2011 Women's World Ice Hockey Championships in Switzerland. A total of 37 players were invited to the selection training camp, which takes place from April 2 to 5 at the Toronto MasterCard Centre. The 21 chosen players will represent Team Canada at the 2011 World Women's Championships. Schedule Under 18 team The National Under 18 team competed in the IIHF World Under 18 tournament Jan. 1–8 in Stockholm, Sweden. The U.S. women defeated Canada in the final to win the first two world under-18 tournaments in 2008 and 2009 while Canada won the third in 2010. 2011 roster members Erin Ambrose and Emily Fulton were part of the 2010 gold medal team. The roster includes players born in 1993 and 1994. The 20 player roster was chosen from a 31 player training camp held in Toronto. The head coach will be Sarah Hodges (head coach of the University of Regina), while her assistants will be Cassie Turner and former national team member France Montour. On December 30, 2010, in an exhibition vs. the AIK Bantam boys team (at Husby Ishall Arena) from Sweden, Canada bested