|World Amateur Championships|
|2003 Bangkok||Light Welterweight|
|European Amateur Championships|
|2004 Pula||Light Welterweight|
Maletin won the bronze medal in the lightweight division (– 57 kg) at the 2000 Summer Olympics in Sydney, Australia. He beat Makhach Nuridinov (Azerbaijan) 14–5, Patrick Lopez (Venezuela) RSC 3 and Selim Palyani (Turkey) RSC 4. In the semifinals, he was defeated by eventual gold medalist southpaw Mario Kindelán from Cuba 15–27. In 2002, he became European champion by besting Boris Georgiev.
He beat Manus Boonjumnong 34:16 in 2003 but controversially lost the World championships final 2003 against French southpaw Willy Blain. Maletin also represented his native country at the 2004 Summer Olympics in Athens, Greece, where he defeated Saleh Khoulef (Egypt) RSC 3 (0:10) and lost again to Willy Blain (France) 20–28.
- Defeated Makhach Nuridinov (Azerbaijan) 14-5
- Defeated Patrick Lopez (Venezuela) RSC 3
- Defeated Selim Palyani (Turkey) RSC 4
- Lost to Mario Kindelán (Cuba) 15-27
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