Mbappe and injuries key factors ahead of Real Madrid-Barcelona clash

MADRID, Oct. 25 (Xinhua) -- Real Madrid plays FC Barcelona on Sunday in the first Clasico of the season which will lay down a marker for both sides.

Madrid goes into the game top of La Liga having thus far played functional rather than attractive football, with Kylian Mbappe making the difference in many games.

Although just two points behind, Barcelona has shown erratic form, with some excellent attackin