Metalurgs were beaten by the German Bundesliga club FC Schalke 04 in the first round, 9–1 over two legs.

[1] On 1 October 2005 Zirnis was a part of the Metalurgs team that beat FK Ventspils 5–1 to seal the club's first ever Latvian Higher League title.

He is one of the most capped players in the history of the Latvian top tier championship behind his ex-teammate Viktors Spole and Igors Korabļovs.

[2] Zirnis made his debut for Latvia national football team on 19 August 1997 in a 0–0 draw with Azerbaijan.

[5] On 17 November 2007 he scored an own goal to give Liechtenstein the lead in a UEFA Euro 2008 qualifying Group F match which Latvia eventually won 4–1.