Lampre's Jan Polanc has won the fifth stage of the 98th Giro D'Italia.
Stage Five had Orica GreenEdge's Simon Clarke in the Maglia Rosa and he led out the riders on a 152.5km stage from La Spezia to Abetone.
The first break got together after fifteen kilometres and saw Axel Domont (AG2R), Serghei Tvetcov (Androni), Silvan Dillier (BMC), Sylvain Chavanel (IAM) and Jan Polanc (Lampre Merida) go twenty one seconds clear after twenty kilometres.
As the five went through Casolo in Lunigiana with 107kms to go, they had a lead of 5.45 and 10.04 with seventy kilometres left.
Twenty six kilometres later and Tvetcov led the escapers through the intermediate sprint before the Moldovan took a wrong turn after getting the corner wrong.
Going into the final twenty one kilometres and the lead was 7.57 ad thoughts turned to the last climb, which was over seventeen kilometres long.
Chavanel attacked as did Domont but Jan Polanc was ahead going into the final ten kilometres.
The pink jersey wearer was 3.11 down with less than five kilometres to go.
Alberto Contador put in an attack followed by Fabio Uru with Richie Porte trying to get over on the steepest part of the climb. They caught up to Domont and Porte attacked.
Polanc kept going rode away to win in 4.08.17 with Chavanel second with Aru third ahead of Contador and Porte who were all 1.31 down on Polanc.
That fourth place was enough to put Alberto Contador in the lead of the race by two seconds from Aru and twenty seconds from Porte.
A delighted Polanc said: "I have waited a long time for a victory and tried a lot of times and it is amazing to have won. "I wanted to get the maximum advantage and knew that the climb was not very steep and I had to drop Chavanel.
"I want to thank my team and the sponsors for allowing me to race in the Giro and i want to thank my family and friends for their support."
Contador, the new race leader said: "i did not really think about attacking but I had to do something as Richie and Fabio are very strong.
"Being in pink does not add any pressure to me or my team as there is still a long way to go to Milan."