Manchester United humiliated Double champions Chelsea in the Community Shield at Wembley by three goals to one.
Strikes from Valencia four mins from half-time, Hernandez on 76 minutes and a sweetly taken lob by Berbatov on 90 minutes secured United’s first victory over Chelsea in Carlo Ancelotti’s reign.
Chelsea’s lone goal came from Ivory Coast forward Kalou on 83 minutes.
This was the West Londoners' fourth pre-season defeat on the spin and the Blues need to sharpen up before Saturday’s Premier League opener against West Bromwich Albion at Stamford Bridge.
United were well worth their victory and took the lead when Rooney outsmarted Ashley Cole and zipped across a low drive.
Quite where the Chelsea central defence were is anybodies guess and in-running Valencia slotted home an easy side footer past Hilario.
United’s second was a tad comical - again Cole was exposed and the byline ball from Valencia flashed off Hernandez’s his knee and then face and into an empty net.
Kalou hit back with seven minutes remaining. But with United toying with their main rivals deep into injury time, Berbatov conjured up a bit of magic and lobbed HIlario from just inside the Chelsea area.
Chelsea: Hilario, Paulo Ferreira (Bruma 79), Ivanovic, Terry, Cole (Zhirkov 79), Essien, Lampard, Mikel (Drogba 60), Kalou, Anelka (Sturridge 60), Malouda (Benayoun 72).
Subs Not Used: Turnbull, Van Aanholt.
Goals: Kalou 83.
Man Utd: Van der Sar, O'Shea, Jonathan Evans, Vidic, Fabio Da Silva (Smalling 71), Valencia, Scholes (Fletcher 80), Carrick (Giggs 79), Park (Nani 46), Owen (Hernandez 46), Rooney (Berbatov 46).
Subs Not Used: Kuszczak.
Goals: Valencia 41, Hernandez 76, Berbatov 90.
Att: 84,623
Ref: Andre Marriner (W Midlands).