[1] Lyashko qualified for the men's 100 m butterfly at the 2004 Summer Olympics in Athens, by posting a FINA B-standard of 56.08 from the Kazakhstan Open Championships in Almaty.

[2] He challenged seven other swimmers in heat two, including 17-year-old Michal Rubáček of the Czech Republic.

He raced to second place by a 1.03-second margin behind winner Rubacek in a personal best of 55.90.

Lyashko failed to advance into the semifinals, as he placed forty-sixth overall in the preliminaries.

[3][4] This biographical article related to an Uzbekistani swimmer is a stub.