 On July 19, 2011, Sekera signed a four-year contract extension with the Sabres worth $11 million and in doing so, avoided salary arbitration.During the 2012–13 NHL lockout, which cancelled the majority of the first half of the 2012–13 season, Sekera played in his native Slovakia with Slovan Bratislava of the Kontinental Hockey League (KHL).He returned to the Sabres following the return of NHL play in January 2013.