|Date of birth||29 May 1973|
|Place of birth||Šumperk, Czechoslovakia|
|Height||1.74 m (5 ft 8 1⁄2 in)|
|1987–1991||FC Baník Ostrava|
|1991–2000||FC Baník Ostrava|
|2003–2006||FC Baník Ostrava||64||(3)|
|1994–1996||Czech Republic U-21||13||(0)|
|* Senior club appearances and goals counted for the domestic league only.
Slončík played in the position of midfielder-playmaker. He spent most of his career at Baník Ostrava. In 2000, he moved to Sparta Prague, but he was not very successful and returned to Baník the next season. He was a squad member in Baník Ostrava's 2003-2004 championship season. In 2005, he won the Czech Cup with Baník.
After the 2010/2011 season, Slončík retired from professional football.
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