THERE ARE A TOTAL OF SIXTEEN INVINCIBLE CLUBS IN FOOTBALL HISTORY.

Over the years there have been sixteen invincible clubs , over Europe over the years two each from Spain, Italy ,England Scotland, Romania Portugal, and clubs from Holland, Belgium and Ukraine as well. 1) Celtic. 2010/2011. 2)Juventus. 2011/2012. 3) F.C. Porto. 2010/2011. 4) Arsenal. 2003/2004. 5)Shaktar Donetsk. 2000/2001. 6)Ajax. 1994/1996. A total of fifty two games. 7)A.C.Milan 1991/1992. 8) Dinamo Bucharest.1986/1987. 9) Steaua Bucharest. 1978/1979. 10). A.C. Perugia. 191978/1979. 11) Royale union Saint Gilloise. 1935/1936. 12) Benfica.1977/1978. 13) Real Madrid. 1931 /1932. 14) Atletico Bilbao.1929/1930. 150 Glasgow Rangers. 1898/1899. 16) Preston. 1888/1889. Please note the few points here. 1) In the old days thee were fewer clubs and lesser games to win in a year. 2) Mighty Barcelona have never gone a year undefeated in their history.. Real Marid have not gone undefeated since they won their so many campion league trophies .