Walker replaces Löwik for Giro

Australian William Walker will replace Dutch racer Gerben Löwik for the Giro d'Italia according to the Dutch Press Agency. Löwik will not be competing for health reasons due to "injury on his buttocks" according to Rabobank's team website. Löwik is having a rough 2007; he could not start several races earlier this year due to an injured his wrist.

Walker, 21, is in his second professional year. The Australian is currently riding the Tour de Romandie but will make the journey from Switzerland to Sardegna this week.

Rabobank previously announced its Giro line-up, so the roster now consists of Mauricio Ardila, Léon van Bon, Koos Moerenhout, Graeme Brown, Michael Rasmussen, Max van Heeswijk, Dimitri Kozontsjoek, Pedro Horillo, and William Walker.