Manchester United star put the club three goals ahead against Olympiakos.
Dutch international Robin van Persie showed his class, scoring a superb free-kick early in Manchester United's second half against Olympiakos.
The goal put United three goals to the good, placing them ahead in the tie after a nightmare in Greece.
Van Persie scored his first from the penalty spot, and second by prodding home from a Wayne Rooney assist before netting his third.
The striker last week confirmed his desire to remain at Old Trafford, scotching rumours of a summer exit, and the goals illustrate his re-inforced importance to the side.