Real Madrid have to learn Barcelona lessons from Copa defeat ... and fast

Having ended Real Madrid's chances of winning the Copa del Rey on Wednesday, and improved their own chances of claiming a third Treble, Barcelona now have an opportunity to definitively erase their rivals from the title race and create all-time Clasico history too. The greatest fixture in the history of club football is 90 years old this month -- for the record, it's tied at 95 league wins each -- but in all those years neither side has gone to the other's stadium twice in three days, let alone...