At some point during the history of the Olympic games, most world records for most sports have been broken.
well the world records that where broken in 1920 are longest Punch-Bag Marathon, Most Competitive Full Contacts Rounds, Most Concrete Blocks Broken in a Minute - Karate, Male
welll it is 16836
most card row
I know one, most jelly beans swallowed in 10 seconds
most feet are broken through sports like soccer and football.