(Videos) Cristiano Ronaldo nets 13-minute brace for Portugal to audition for Man United penalty-taking duties

 Cristiano Ronaldo bagged a brace within 13 minutes of Portugal’s World Cup qualifying clash with Luxembourg on Tuesday evening.

Ronaldo, who is already the top goal-scorer in international football history, will have been looking to build on his bright start back at Manchester United over this international break.

The Red Devils forward got on the scoresheet against Qatar last time out and he’s already netted two within a quarter of an hour against Luxembourg.

Ronaldo netted his first, a penalty, against the 94th-ranked international side in the world, and felt it appropriate to perform is trademark “siiiuuuu” celebration.