Katusha rider Spilak took a 52-second advantage over Damiano Caruso into the final day, and he finished four seconds behind the Italian in fifth on the day to secure the yellow jersey.

The 30-year-old also won the title in 2015, and he will go into July's Tour de France hoping to become the first man to complete the Tour of Switzerland-Grand Boucle double since Belgian great Eddy Merckx in 1974.