In his first bout since losing his IBF world title last December, super lightweight Eduard Troyanovsky (26-1, 23 KOs) destroyed former Euro champ Michele Di Rocco (41-3-1, 18 KOs) in four rounds on Saturday night at the Luzhniki Concert Hall in Moscow. Troyanovsky dropped Di Rocco in rounds one and three, both times with right hands. Two more knockdowns in round four ended it. Time was 2:18.