His record of five world titles has never been broken but has been equaled by Christian Pierre during the 1990s.
Despite both players being five-time world champions, it was Duguet that was awarded the prize of 'player of the century' (French: joueur du siècle) at the 2000 World Championship in Paris.
Away from Scrabble, he was the Des chiffres et des lettres champion in 1984, a game show based on anagrams and numbers games known as Countdown in the UK.
Duguet has occasionally come out of retirement to play Scrabble, finishing 7th at Vichy in 2006, a tournament which welcomes more than 1200 players each year.
Duguet is also an author and has written six books with Michel Charlemagne, another World Scrabble Champion who turned to card games after being World Scrabble Champion.