Ref Watch On Chelsea Vs Man. United

Former top-flight referee Dermot Gallagher joined Rob Wotton in the Sky Sports News HQ studio to go through each contentious call at Stamford Bridge.

INCIDENT 1: Chelsea appeal for a penalty after John Terry's shot appears to hit Daley Blind's arm.

SCENARIO: A cross comes in from the right and Terry sends a volley towards goal; Blind throws himself in front of the shot with his right arm outstretched and blocks the effort. The ball hits Blind's left arm, tucked in close to his body, and goes out for a corner. No penalty given.

GALLAGHER'S VIEW: Correct decision.

GALLAGHER SAYS: The ball strikes him (Blind), he does not strike the ball. The arm outstretched is not the arm the ball strikes. It hits the arm tucked into his chest and it would have hit his chest anyhow - I think it would have been very, very harsh. Also, it has come at such speed and when you look at it further on, the referee can't see it.

INCIDENT 2: Blind pushes Diego Costa over on the edge of the Manchester United area.

SCENARIO: A ball is played over the top for Costa and, as he tries to drive into the penalty area, Blind shoves him over. The striker falls inside the area with a free-kick and yellow card awarded.

GALLAGHER'S VIEW: Correct decision.

GALLAGHER SAYS: Definitely outside the area, definitely a foul and definitely a yellow card. He's got a promising attack but Costa delays a little bit and then goes down inside the area. For me, it's a good decision by both parties because the assistant has probably said 'that's where it happened' [outside the box] and no [it was not denying a clear goalscoring opportunity].

INCIDENT 3: Full-time whistle blown on 96 minutes as United try to counter-attack.

SCENARIO: Manchester United clear a Chelsea corner and try to counter-attack but are stopped in their tracks as the referee blows the full-time whistle. Six minutes added-time had been announced but, during that time, Chelsea had scored and a substitution had taken place.

GALLAGHER'S VIEW: If he'd have played on, nobody could have argued, the fact he didn't play on left him a little bit vulnerable.

GALLAGHER SAYS: I think he (Van Gaal) felt aggrieved because six minutes was put up and in the six minutes Chelsea scored and a substitute, Ander Herrerra, came on. United attack and the only winner then can be United because Chelsea aren't going to get the ball back [before the final whistle] and that's why he's aggrieved because the whistle goes smack on six minutes. Unfortunately, he's realised that and the fourth official is in a position where he can't defend it.

Credit: Skysports.com