[2] In 2003, Hammarby signed the Swedish international Staffan Olsson, who returned to his native country after a long career in Germany.

[4] The following season, Hammarby won their first Swedish championship, defeating IK Sävehof by 34–31 in the final, breaking the dominance of clubs from southern and western Götaland that had won all domestic titles since 1978.

[5] Olsson retired from playing in 2006, instead taking over as manager of Hammarby (a position that he stayed in until 2011).

[6] They won their third consecutive title in 2008, again defeating IK Sävehof in the final, this time by 35–29.

In 2019, Hammarby was relegated to the second tier Allsvenskan, but won a promotion back to Handbollsligan two seasons later.