|Full name||Serhiy Valyayev|
|Date of birth||16 September 1978|
|Place of birth||Makiyivka, Soviet Union|
|Height||1.81 m (5 ft 11 in)|
|1996–1997||FC Shakhtar Makiivka|
|1997–2003||FC Dnipro Dnipropetrovsk||100||(13)|
|2004||FC Kryvbas Kryvyi Rih||6|
|2005–2012||FC Metalist Kharkiv||137||(11)|
|2012||FC Hoverla Uzhhorod||1||(0)|
|2012–2013||FC Arsenal Kyiv||12||(0)|
|2013||FC Helios Kharkiv||7||(0)|
|* Senior club appearances and goals counted for the domestic league only.
Valyayev become one of several footballers that were bought by Metalist Kharkiv in 2005 by the new manager Myron Markevych. Since then, the team has won three bronze titles in the Ukrainian championship.
Valyayev was called up to the national team of Ukraine when Metalist Kharkiv began having successes in UEFA Cup, finishing on top of their group. He was called up along with fellow team-mates Marko Dević and Valentyn Slyusar by Oleksiy Mykhailychenko for a friendly match against Norway on 19 November 2008. His second appearance for the team was significant, as he scored the opening goal in the tenth minute of a friendly match against Cyprus on 10 February 2009.
- Mykhailychenko called up three players from Metalist – UA-Football.com, (Ukrainian), 10 November 2008
- Cyprus tournament: Slovakia v Ukraine – Ukrainian Soccer Portal, 10 February 2009
- Profile on Official Metalist website (Russian)
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