#2 Rio Ferdinand and Nemanja Vidic

Possibly the greatest centreback pairing in the history of the Premier League, Rio Ferdinand and Nemanja Vidic proved to be the backbone of United's successful period under Sir Alex Ferguson.
Fergie was known to built defenses which personified robustness and toughness. The Scottish manager relied on rock-solid defenders who would put their bodies on the line in order to fight for the prestige of the badge.
Rio Ferdinand and Nemanja Vidic were no different as the center-back pairing proved to be a nightmare for opposition sides. What really worked well between the pair was their consistency and most importantly their love for the club.
Ferdinand and Vidic won 5 Premier League titles together and were instrumental in United's historic UEFA champions league triumph in 2008.
Vidic and Rio were probably the first names on the teamsheet under Sir Alex and it's no secret that the legendary Scotsman rested his trust in the 2 at the demanding away nights in Europe to which the duo obliged handsomely.