cristiano ronaldo scored the 300th goal of his real madrid career .
the portuguese did it in just 288 appearances for the spanish club .
ronaldo is chasing down alfredo di stefano 's 307 and raul 's 323 totals for real .
james rodriguez doubled their lead as real beat rayo vallecano 2-0 in la liga .
barcelona sit top of the table but second-placed real cut the gap to four points .
carlo ancelotti plans to appeal ronaldo 's ` incredible ' yellow card for diving .