Career
He currently players for Turkish side Kayseri Erciyesspor. He plays as an attacking midfielder and can play on both sides of the field On February 12, 2011, Hammar made his professional debut for AS Nancy in a Ligue 1 game against AJ Auxerre.
Before the 2013-2014 Süper Lig season, Hammar moved to Kayseri Erciyesspor.
He played his first match for his new team in a Turkish Cup meeting against Edirnespor. He played in all three of Algeria"s group stage games at the World Cup, coming on as a substitute in the first two and starting the final one against South of Korea.
However, Algeria lost all three games and failed to progress to the second round. On March 24, 2010, Hammar was called up to the Algerian Under-20 National Team for the 2010 UNAF U-20 Tournament in Algeria.