eden hazard gave chelsea the lead in the 38th minute when he latched onto a flick from oscar .
radamel falcao complained of a foul by blues skipper john terry in the build-up to the opening goal .
hazard almost made it 2-0 but his close-range effort hit the bar after a surging run from didier drogba .
united midfielder ander herrera was booked for simulation in the 95th minute after trying to win a penalty .
the result means jose mourinho 's side are now 10 points clear at the top of the table .
click here to read oliver todd 's player ratings from stamford bridge .