Froome slips as Felline wins rainy prologue
27-year-old Felline covered the 4.8km in 5min 57sec finishing two seconds ahead of Britain's Alex Dowsett (Movistar).
Trek rider Felline, 27, covered the 4.8km in 5min 57sec finishing two seconds ahead of Britain's Alex Dowsett (Movistar) with Australian Alexander Edmondson (Orica) seven seconds off the leader.
Three-time Tour de France champion Froome -- a two-time winner of the Swiss race -- opted to start among the early riders to avoid the rain but his tactics backfired on a slippery surface.
The Sky rider lost 29 seconds to the winner, with BMC's Van Garderen conceding 34sec.
The Swiss race is designed to prepare riders for July's Tour de France with Wednesday's stage to Champery over a mountainous route with wintery conditions forecast.
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