URC semi-finals: Five battles to watch as Stormers take on Leinster

The Stormers face Leinster in the URC semi-final at the Aviva Stadium in Dublin. Key matchups include Evan Roos vs Caelan Doris and Paul de Villiers vs Josh van der Flier. Leinster are favorites, but the Stormers rely on their ability to rise to the occasion in knockout rugby. The winner advances to the Grand Final.