Britain's Simon Yates has taken the general classification lead in the Giro d'Italia after he narrowly missed out on a stage victory around Mount Etna.
The Mitchelton-Scott rider broke away from the peloton during a difficult climb to the top of Mount Etnaas he closed down his teammate on the final assent. However, Yates allowed his teammate to take the stage, forfeiting the four bonus seconds it would have given him on the rest of the pack.
Yates now leads Tom Dumoulin by 16s in the race for the pink jersey, while Chaves' victory lifts him up into third place. Rohan Dennis, who held the jersey heading into the stage, fell away during the final climb and is now 53s down on Yates.
"The start was crazy. I didn't really have to do anything, I could sit in the wheels and save energy," Yates said after becoming the first Brit to wear the Maglia Rosa since Mark Cavendish in 2013. "I felt really good. I looked across the road and everyone was looking at each other. I took a chance.
"Chaves had been out on the road all day, so he deserved the stage win."
Team Sky's Chris Froome continued to be off the pace and is sitting in eighth place, 1m 10s behind Yates.