The 29-year-old forward joins the Revolution from Iraklis FC, recently relegated to the Football League 2 of Greece from the top-level Greek Superleague. Prior to Iraklis, Zerka spent a decade playing in France, first as a member of AS Nancy in France from 2001 to 2009, and later with FC Nantes from 2009 to early 2011.
During his time with AS Nancy, Zerka made a total of 173 appearances and netted 17 goals. The French side has been competing in Ligue 1 since the 2005-06 season, after having been promoted from Ligue 2. Zerka appeared in 85 Ligue 1 matches, scoring 13 goals in the four years he spent with the club at the highest level of French football.
Upon joining FC Nantes of Ligue 2, Zerka made an immediate impact by scoring in both his debut and second matches with the club. He featured in 35 games, and recorded two goals during his two seasons with the club.
Zerka was eligible to play for either the French or Moroccan national teams because of his dual citizenship and chose to represent Morocco, with whom he has earned 12 caps and scored three goals. He participated in the 2004 Summer Olympics, making the starting XI in two of Morocco’s three group stage matches. Zerka was also called up to the national squad for the 2008 African Cup of Nations, and netted an international goal for the Atlas Lions in a convincing 5-1 win over Namibia.