Few rivalries have captured the attention of the entire world quite like El Clasico. Barcelona's 3-1 victory in the Supercopa de España on January 15 was the 251st time that Real Madrid and their Blaugrana rivals faced off against each other in official competition, with Real winning 101 of them, Barcelona claiming 98 wins, as well as 52 draws. With 419 goals for Real Madrid and 412 for Barcelona, it could hardly be more even-keeled and competitive.

From Lionel Messi to Cristiano Ronaldo, from Pep Guardiola to Jose Mourinho, both teams have been graced with the presence of some of football's greatest players and managers. In total, there have been 37 players who have suited up for both Real Madrid and Barcelona since the first Clasico in 1902. Today, we're taking a look at eight of the best players who have crossed the El Clasico divide.

1. Ronaldo

Barcelona picked up the electric Brazilian talent that lit up the Dutch league for the past two years for a world record fee at the time ($19.5 million). His time at the club was relatively short but oh so sweet. Having signed an 8-year contract, he scored 47 goals in 49 games, as defenses seemed to have no idea how to stop him. However, at the end of the season, a contract issue meant that Inter could pay his release clause and take Ronaldo to the Giuseppe Meazza.