|Date of birth||August 29, 1990|
|Place of birth||Warsaw, Poland|
|Height||1.68 m (5 ft 6 in)|
|2010–2011||→ ŁKS Łódź (loan)||28||(11)|
|2012||→ Lechia Gdańsk (loan)||8||(2)|
|2015–2016||→ SV Sandhausen (loan)||17||(2)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 13:25, 23 April 2017 (UTC).
‡ National team caps and goals correct as of 6 July 2015
In 2012, he has loaned to Lechia Gdańsk.
- Scores and results list Kosecki's goal tally.
|1.||26 March 2013||National Stadium, Warsaw||San Marino||5–0||5–0||2014 FIFA World Cup qualifier|