20th century, but check this out:
Jahangir Khan … greatest squash player ever:
Jahangir Khan was unbeaten in all competitive play for a record 555 consecutive matches from 1981 to 1986 & is the Guinness World Records holder for this 555-winning legacy as the longest winning streak by any athlete in any top-level professional sport.
https://unsquashable.com/blogs/world...er-of-all-time