“Here’s a date for your diaries: March 27, 2012. That’s the earliest that Real Madrid and FC Barcelona can meet each other again. That’s when they will play if they get drawn together in the quarterfinal of the Champions League — and if the first clash is on the Tuesday. If they meet in the semifinal, they cannot face each other until April 17. If that happens, they will play three times in eight days, or possibly maybe even three times in six, because the second league game will be on April 21 or 22.” SI