In the build-up to El Clasico, strongGoal.com/strong has been running a 1-on-1 series, pitting every player from Barcelona and Real Madrid's probable starting XI against each other.

These are some of the best players in the world in their respective positions: Valdes vs Casillas, Dani Alves vs Sergio Ramos, Xavi vs Xabi, Iniesta vs Oezil and not forgetting, Messi vs Ronaldo.

We also asked strongGoal.com/strong readers to vote who they thought would emerge on top against their direct counterparts on Monday, November 29.

a href=http://www.goal.com/en/news/1675/goalcom-polls/2010/11/29/2236543/el-cl… here are the full poll results./a