[3] He started shooting after receiving an air rifle from his grandfather, a hunter, and following his older brother.

[5] In 2002 he became European champion in Lonato taking advantage from the basic round result of 122 and keeping off Marco Venturini in the final.

[7] After adding silver in 2011 and bronze in 2014, Kostelecký won his second European championships title in 2017 in Baku.

[8] Kostelecký married Slovak shooter Lenka Barteková in 2010,[9] a year later their son Daniel was born.

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