Drafted into Poland's UEFA EURO 2012 squad as a late replacement for the injured Łukasz Fabiański, Grzegorz Sandomierski is a promising young goalkeeper who has performed wonders for his home-town club, Jagiellonia Białystok, but struggled to impose himself in Belgian football with KRC Genk.

• Bialystok-born, he joined local club Jagiellonia as a youth, making his first-team debut in the 2007/08 Ekstraklasa season following a loan move to KKS Lech Poznań's reserve team.

• Made five starts in his debut season with Jagiellonia but his 2008/09 campaign was wrecked by injury and he spent a further spell away from the club on loan, at Ruch Wysokie Mazowieckie.

• Established himself as Jagiellonia's first-choice keeper in 2009/10, keeping his goal intact for a club record of 564 minutes in the autumn; did not play, however, in the Polish Cup final triumph over MKS Pogoń Szczecin – the club's first major honour.

• Missed just one Ekstraklasa game in 2010/11 as Jagiellonia finished fourth; also made his debuts in European club competition – against Aris Thessaloniki FC – and on the international stage – against Bosnia & Herzegovina in neutral Antalya on 10 December 2010.

• Transferred to Genk in summer 2011 but failed to displace Hungarian keeper László Köteles and returned to Jagiellonia on loan for the second half of the season, in which he started every game.