[6] His career at Tromsø got off to a rough start, after he was given a two-match suspension for his involvement in a group fight, which he described as "a little hockey brawl" that occurred during his debut match against Molde.

[7] On 3 August 2007, it was announced that Canada's Toronto FC head coach Mo Johnston had loaned Stamatopoulos in the middle of their "keeper crisis".

Stamatopoulos signed a season-long loan deal with the reigning Swedish champions on 6 March 2010.

[10] He became first choice following the tragic death of Ivan Turina in May 2013,[11] but was subsequently the club's second-choice goalkeeper.

In addition, he was appointed as head goalkeeping coach for the club and would continue to be registered as a player in the squad.