Sagan started the 2014 season at the Tour de San Luis, where he finished second on the final stage. Then he competed at Dubai Tour, where he took second and third place stage finishes; he lost out to Marcel Kittel on both occasions. He finished second at Strade Bianche again, this time he was defeated by Michał Kwiatkowski. The two riders attacked with 21 km (13.0 mi) to go, but Kwiatkowski was stronger on the final climb. At Tirreno–Adriatico Sagan won one stage and the points classification.Sagan finished tenth in Milan – San Remo, despite being considered one of pre-race favorites. Then he went on to win E3 Harelbeke and he finished 3rd in Gent–Wevelgem. Sagan’s next attempt to win his first monument was at the Tour of Flanders, but he finished 16th. A week later Sagan competed at Paris–Roubaix, where he finished 6th. Sagan won the penultimate stage of the Tour of California, and also won the sprints classification, for the fifth successive year.
In the first week of the Tour de France, Sagan scored seven top-5 finishes in a row, without registering the victory, a feat that had not been recorded since Charles Pélissier did eight top-5 finishes in a row in 1914. The seventh of those result came as a very close photofinish sprint between Sagan and Matteo Trentin, where Sagan had to settle for second by a few millimeters. Sagan has ridden 63 stages of the Tour de France in total, of which 58 were in the green jersey. If opening stages, where no rider is able to hold any jersey, are excluded, Sagan has spent 58 out of 60 stages in the green jersey. He has finished 26 times in the top 5.
In early August, Sagan and his older brother Juraj Sagan signed a three-year contract with Team Tinkoff-Saxo starting in 2015. He is expected to earn in the ballpark of €3.5 million a year.
Sagan went on to compete in the Clasica San Sebastian but withdrew. He then headed to the Vuelta a España and had a difficult first week, his first notable result coming as a third place on Stage 8. That was his only podium result and he withdrew on Stage 14. He made his return on 16 September at the Coppa Bernocchi, where he acted as a lead-out man for his victorious teammate Elia Viviani. (source wikipedia)