Having won the 2014–15 league title, Olympiacos became the only football club in the world to have won a series of five or more consecutive championships for five times in their history, a record that was praised by FIFA with a congratulatory letter of its president, Sepp Blatter. They are also the only Greek club to have won five consecutive national Cups (1957–1961), as well as six League titles undefeated (1937, 1938, 1948, 1951, 1954, 1955). Olympiacos are one of only three clubs to have never been relegated from the top flight of Greek football, and by winning the 2012–13 title, their 40th in total, they added a fourth star above their crest, each one representing 10 League titles.