[6] A move to Leicester City followed in January 2005,[7] but Hirschfeld only made one appearance, keeping a clean sheet in a 0–0 draw against Plymouth Argyle on the last day of the season.

Nordlys, a local newspaper, called Hirschfeld the greatest goalkeeper ever to play for Tromsø IL after only six matches at his new club, ranking him ahead of Einar Rossbach, Knut Borch and Bjarte Flem.

Hirschfeld was in goal when Rosenborg defeated Valencia CF twice in the 2007–08 UEFA Champions League group stage, recording two clean sheets in home-and-away 2–0 wins.

[14] Hirschfeld's big break with Canada came at the 2002 CONCACAF Gold Cup, where he was named the best goalkeeper of the tournament after allowing only four goals in five matches and recording an impressive semifinal shutout against the United States.

On 8 June 2012, Hirschfeld was sent off in a 2014 World Cup qualifier against Cuba for handling the ball outside his penalty area, but Canada prevailed by a score of 1–0 despite the numerical disadvantage.