Diego Ulissi snatched victory on the eighth stage of the 97th Giro D'Italia.
The sun was out for a 179km stage from Foligno to Montecopiolo and after some early attacks, Julian Arredondo (Trek Factory Racing), Marco Bandiera (Androni Giocattoli), Julien Bérard (AG2R-La Mondiale), Edvald Boasson Hagen (Sky), Mattia Cattaneo (Lampre-Merida), Mauro Finetto (Neri Sottoli), Stefano Pirazzi (Bardiani CSF), Perrig Quemeneur (Europcar), Carlos Quintero (Colombia) and Eduard Vorganov (Katusha) formed a break which took a maximum of eight and a half minutes.
Edvald Boasson Hagen of Team Sky took the intermediate sprint with 75kms to go.
Bandiera was dropped as the peloton put the hammer down brought the time gap down to 3.52. This attack by the peloton caused a split in the lead group and Stefano Pirazzi, Arredondo and Quemeneur were left on the Cippo di Carpegna, a climb which saw race leader Michael Matthews drop to the back of the peloton.
Boasson-Hagen had pulled twelve seconds back on the three escapers which were split again when Julien Arredondo attacked with 37.5kms left.
The attack by Arrendondo saw him first over the 1356m climb and past the Pantani monument to take the thirty two points on offer to put him in the virtual King Of The Mountains Jersey.
Arrendondo took it sensibly on the descent before starting on the second climb whilst Matthews dropped out of the pink jersey, falling some seventeen and a half minutes back.
Inside the final ten kilometres, Arrendondo, moved into the lead of the King Of The Mountains competition after taking the Category Two climb at Villaggio del Lago and was two minutes clear of the peloton and a minute clear of Europcar's Pierre Rolland.
Rolland put thirty seconds into Arrendondo but it was now the stage of the Trek Factory rider to lose. Both riders looked to be in pain as behind them BMC led the peloton.
Rolland with 3.3kms left, had Arrendondo in his sights but the pace on the group of favourites which had dropped the peloton had picked up with Steve Moribito working for Cadel Evans on the front, some 45 seconds back.
Rolland caught Arrendondo with 2.6kms to the finish. The Colombian cracked and Rolland had 1.7kms to ride on his own. Moribito was still working on the front of the group of about twenty riders which also included Ivan Basso and Nairo Quintero. Mikel Lander of Astana attacked but Moribito brought him back as Rolland took a left and then a right to get onto the finishing straight.
However, Diego Moreno caught him and then up came Diego Ulissi of Lampre on the right and he got to the front to win in 4.47.47 ahead of Kiserlovski, then Kelderman, Quintana and Cadel Evans who were six seconds back.
Cadel Evans now leads the race by 57 seconds from Rigoberto Uran and said to Daniel Lloyd: "It has been a difficult year, The Giro is a difficult race and now we are in the mountains we will see a different type of racing, Steve Moribito was so good today and his work showed that there are a lot of tired legs today."
Ulissi said to Daniel Lloyd: "I am euphoric for this wonderful day which I did not expect. I came here specially to win a few stages and i am so so happy to have won a second stage."