Cristiano Ronaldo, right, the Real Madrid player, has scored 41 league goals so far this season, but so has Barca's Lionel Messi. Lluis Gene / AFP
Cristiano Ronaldo, right, the Real Madrid player, has scored 41 league goals so far this season, but so has Barca's Lionel Messi. Lluis Gene / AFP

Opportunity for Real Madrid to seal the deal