Nicolas Massu once again steps up as Chile's No. 1 this weekend and must first defeat world No. 247 and relatively new Davis Cupper Ivo Minar in the opening rubber of this World Group quarterfinal. Both Chile and Czech Republic have been hit by injuries, Chile losing its No. 1 Fernando Gonzalez, and Czech Republic its backbones Radek Stepanek and Tomas Berdych, leaving the tie in Coquimbo well and truly open.