Manchester United boss Sir Alex Ferguson lauded Javier Hernandez after the striker steered his side into the Champions League quarter-final.
The summer signing scored a brace, either side of half time, in the 2-1 win against Marseille at Old Trafford to make it five goals in five appearances and 16 in all in his debut season.
Hernandez's remarkable impact has been a huge bonus for United, according to Ferguson.
He opened the scoring in the fifth minute by getting on the end of a cross from Wayne Rooney. His second in the 76th minute was almost identical with substitute Antonio Valencia finding Giggs, who supplied the delivery.
Ferguson said: "I think we are surprised. When we bought him we thought it would take him some time to adjust first of all.