The 2010 IIHF World U20 Championship, commonly referred to as the 2010 World Junior Hockey Championships (2010 WJHC), was the 34th edition of World Junior Ice Hockey Championships. The tournament was hosted in Saskatoon and Regina, Saskatchewan, Canada, from December 26, 2009 to January 5, 2010. This was the second time Saskatoon has hosted the tournament, after hosting it in 1991. The medal round, as well as all Canada's preliminary round games, took place in Saskatoon at the Credit Union Centre. The arena underwent renovations and upgrades before the 2010 tournament, including an increase in capacity. Other games were played at the Brandt Centre in Regina, which also received upgrades. In addition, pre-tournament exhibition games were held in other towns and cities throughout the provinc