 On 24 October 2009 in Łódź, Poland, Adamek defeated Andrew Golota by TKO in the fifth round to win the IBF "International" Heavyweight Title.Then, on 6 February 2010 in Newark's Prudential Center he defeated Jason Estrada by unanimous decision after 12 rounds.Adamek (40-1; 27 KO) then took on fellow heavyweight contender Chris Arreola (28-1; 25 KO) on 24 April 2010, at the Citizens Business Bank Arena in Ontario, California California.