Barcelona and Real Madrid have carried on one of the world's most intense rivalries for decades now. Hatred of the opposition runs bone deep, and there have only been a few men brave enough to cross that divide and play for both teams. Here are 11 of the most notable to do it.
Julen Lopetegui (Real Madrid - 1988-91, Barcelona - 1994-97)
Spain's current manager Julen Lopetegui may have never coached at the national team level before, but he has plenty in common with a number of La Roja's players, having played in both shirts. He only turned out for Madrid once in three years, and five times in three years for Barcelona, but he's part of history nonetheless.
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Javier Saviola (Barcelona - 2001-07, Real Madrid 2007-09)
'El Conejito' opened the book on his Clasico history at Barcelona, arriving to much fanfare in 2001. He played 123 games for the club and scored 49 goals before falling out of favor and going out on loan to Monaco and Sevilla. He then signed with Real Madrid in '07, but only made a handful of appearances with Los Merengues before moving to Portugal with Benfica.
Alfonso Perez (Real Madrid - 1986-95, Barcelona - 2000-02)
Alfonso Perez was a Real Madrid youth player, coming all the way through the club's ranks and making his first team debut in 1991. He played 88 times for the club, scoring 13 goals before moving to Betis where he truly made his name after netting 57 goals for the Seville side. He then moved to Barcelona where he didn't have nearly the same success, playing 21 times and netting just twice.
Robert Prosinecki - (Real Madrid - 1991-94, Barcelona - 1996-97)
Robert Prosinecki arrived in Spain from Belgrade in 1991, playing 55 matches for Madrid, moving to Oviedo, then Sevilla before ending his time in Spain with Barcelona. He only managed a handful of appearances for the club before heading off to Croatia, but he still managed a feat only a few players in the world can claim. At the national team level, Prosinecki also played for the former Yugoslavia before turning out for Croatia.
Bernd Schuster (Barcelona - 1980-88, Real Madrid 1988-90)
Bernd Schuster is not only one of the select few to appear on both sides of El Clasico rivalry, he's one of the even smaller group to move directly from one to the other. After eight years in a Barça shirt, playing 170 times and scoring 63 goals, he then moved to Real Madrid where he made 61 appearances, scoring 13 goals. Schuster wasn't done crossing the divide there though; he then joined Atletico Madrid directly from Real. A brave man indeed.
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Luis Enrique (Real Madrid - 1991-96, Barcelona - 1996-04)
Luis Enrique knows all about El Clasico. He's been part of it on both sides as a player, and now he's gone through it from the dugout as Barcelona manager. Enrique made 157 appearances for Madrid, scoring 15 goals, but his real success came in a Barcelona shirt as he played 207 times for the Blaugrana, scoring 73 goals.
Gheorghe Hagi - (Real Madrid - 1990-92, Barcelona - 1994-96)
The 'Maradona of the Carpathians' is Romania's best ever player. He arrived in Spain in 1990 after eight years as a pro in his home country, first landing in Madrid. He spent two seasons at the capital club, playing 64 matches and scoring 16 goals before moving to Serie A with Brescia, then returning to Spain in a Barcelona shirt. He spent a further two seasons at the Nou Camp, but didn't have as much success as he had in a Madrid shirt, playing only 36 matches and scoring seven goals. Despite playing for both of the country's biggest clubs, he never won a La Liga title in his four years in Spain, and ended his career at Galatasaray in Turkey.
Samuel Eto'o - (Real Madrid - 1997-00, Barcelona - 2004-09)
Africa's most decorated ever footballer, Samuel Eto'o made his name at Barcelona, but he started his career at Real Madrid. He spent three years at the capital club, making a whopping three appearances and going out on loan three times. He moved to Mallorca where he first found his scoring boots, staying there for four years before moving to Barcelona. The rest is history.
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Michael Laudrup - (Barcelona - 1989-94, Real Madrid - 1994-96)
One of the world's most underrated players, Michael Laudrup moved from Juventus to Barcelona in 1989 where he won pretty much every trophy possible in his five years. He then allegedly fell out with Barça's golden child Johan Cruyff, moving acrimoniously to Real Madrid where he promptly became the only player ever to win the Spanish league five times in a row playing for two different clubs.
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Luis Figo - (Barcelona - 1995-2000, Real Madrid 2000-05)
The most infamous of all those to play both sides of the rivalry, Luis Figo won two league titles with Barça before his transfer to Real Madrid in 2000 set a then-world record transfer fee of €60 million. He went on to win two more titles with Madrid, but he achieved the ultimate goal of lifting the Champions League trophy in a Merengue shirt. He's not well loved in Barcelona, and fans famously threw a pig's head at him during his second match back at the Nou Camp in 2002 while taking a corner kick.
Ronaldo - (Barcelona - 1996-97, Real Madrid 2002-07)
The greatest player to ever span the divide, Ronaldo only spent one year at Barcelona, but what a year it was. O Fenomeno scored 47 goals in 49 matches for Barcelona, and became the youngest player to ever win FIFA World Player of the Year at the age of 20. He then moved to Inter Milan for five years before returning to Spain, struggling often through injury, but winning everything but Champions League with Los Merengues. After that, he returned to Italy, to play on the opposite side of another of world soccer's greatest rivalries, joining AC Milan for a year before ending his career back home in Brazil.