Bartłomiej Bartosiak (born February 26, 1991 in Bełchatów) is a Polish footballer who currently plays for GKS Bełchatów.
On 7 April 2008 Zbozień scored his first goal in a 2–1 victory over GKS Bełchatów in Młoda Ekstraklasa.
His debut in Legia's t-shirt took place on 24 September 2011 in the game against GKS Bełchatów.
Łukasz Wroński (born 13 January 1994) is a Polish footballer who plays as an attacking midfielder for GKS Bełchatów in the Ekstraklasa.
Jonczyk began his career when he was 9 years old at Piotrcovia Piotrków Trybunalski, but moved to GKS Bełchatów when Piotrcovia youth team disbanded in 2005.
In February 2011, he signed a three-year contract with GKS Bełchatów.