Domo’s Leon Van Bon won the fourth stage of the Tour of Switzerland, a mountainous 160-kilometer run between Coire and Ambri on Saturday. Italy's Daniele Nardello came in second ahead of Briton Charles Wegelius.

Coast’s Alex Zülle retained the overall leader's yellow jersey. Van Bon and Nardello slipped the peloton, with 80km of the stage remaining, but this pair were caught by a select group including Wegelius, who led the sprint for the line, only to be retaken by a tireless Van Bon.