Complex sentence: Sergei Kostitsyn (Siarhiej Kascicyn; born March 20,1987 in Navapolatsk, Byelorussian SSR, Soviet Union) is a Belarusian professional ice hockey player currently playing for the Hamilton Bulldogs of the American Hockey League (AHL).
Split into simpler sentences: Sergei Kostitsyn (Siarhiej Kascicyn; born on March 20,1987) is a Belarusian professional ice hockey player. He currently plays for the Hamilton Bulldogs of the American Hockey League (AHL).