Cristiano Ronaldo has celebrated dozens of goals at Old Trafford but his winner for Real Madrid against Manchester United was the first time he held up his hands in apology after scoring.
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The Portuguese, who spent six years at United from 2003, completed a 2-1 comeback win for Real who went through to the Champions League quarter- finals 3-2 on aggregate.
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He received a rousing welcome back before the match, but broke the home fans' hearts when he slid in at the far post after 69 minutes to sweep the ball into the net.
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"It was an emotional moment for me. I just have one word to say - unbelievable. What the supporters do to me is they make me feel shy," said Ronaldo, who also scored Real's equaliser in the first leg in Madrid.