HC Oceláři Třinec (Třinec Steelers) is an ice hockey team who play in the Czech Extraliga, the top tier of Czech ice hockey. Their home arena is Werk Arena in Třinec. The team's main sponsors are the local Třinec Iron and Steel Works. In the 2010/2011 season the team won the Czech Extraliga for the first time in their history. When Trinec was briefly a part of Poland in 1938-39, the club played in the Polish Silesian Championship under the name KS Zaolzie Trzyniec. They lost to Pogon Katowice in the finals.