Complex sentence: Tselousov's only international medal came at the 2011 World Mixed Doubles Curling Championship, where he and partner Alina Kovaleva won the silver medal after losing to Switzerland 11-2 in the final.
Split into simpler sentences: Tselousov's only international medal came at the 2011 World Mixed Doubles Curling Championship. Tselousov and partner Alina Kovaleva won the silver medal, after losing to Switzerland 11-2 in the final.