The recent friendly match between Portugal and Spain ended in a 4-0 thrashing of the World Cup holders, but the Portuguese captain wasn't to know that when, still deadlocked, his fine goal was controversially ruled offside, and became the most viewed sports clip on YouTube for the week ending November 16.
Bombing into space on the left, he shook off club rival Pique and, just outside the 6-yard box, he lobbed Casillas only for winger Nani to well and truly bury it, drawing the linesman's flag in the process.
That clip appears three times in this week's YouTube sports chart, as does another altogether more comical attempt on goal - this time from the Asian Games' last 16, in a match between the Uzbek and Qatari teams.
Scottish street rider Danny MacAskill accrued nearly 22 million views of his "Inspired Bicycles" video since April '09 and here traces a scenic and stunt-laden route from Edinburgh to the Isle of Skye, notching 2 million hits since November 16.
In other videos, Real Madrid keeper Casillas appears once more, showing why he's one of the world's best with an instinctive-reaction save that catches an object thrown from the crowd; David Haye knocks out Audley Harrison in the third round; F1 driver Alonso conveys his frustration at fellow driver Petrov, who ended his chances of winning the 2010 season.
YouTube's most watch sports videos of the week
1) " Cristiano Ronaldo's disallowed goal [Portugal - Spain]" - 3,129,040 total views
2) Qatar - Uzbekistan 0-1 (Asian games : Funniest miss in history) - 1,162,148 total views
3) Danny MacAskill - "Way Back Home" - 2,006,408 total views
4) Iker Casillas great reaction save on...newspaper attack! - 948,735 total views
5) " Worst goalkeeper vs worst attackers (in the world)" - 1,115,349 total views
6) David Haye vs Harrison: The Knockout, Round 3 - 811,624 total views
7) Ronaldo Awesome | Disallowed Goal - 991,923 total views
8) Alonso waving Petrov in Abu Dhabi 2010 - 686,850 views
9) Cristiano Ronaldo - disallowed goal - 865,920 total views
10) The biggest football miss in history - Uzbekistan vs Qatar - 833,933 total views
Data collected November 23