High Quality Content by WIKIPEDIA articles! The 2011 IRB Junior World Rugby Trophy was the fourth annual international rugby union competition for Under 20 national teams, second-tier world championship. The event was organised by rugby`s governing body, the International Rugby Board (IRB). Two venues were used, both located in Tbilisi. 12 of the 16 games were played at the Avchala Stadium, the other 4 games at the Shevardeni Stadium.