his career went 20 years with no drop off.
Rondo's best years (10-11, 11-12, 12-13) he averaged just over 11 assists per game. His other good seasons he was averaging about 9.8. If a player wanted to beat the record they would have to average 9.64 assists per game, play all 82 games per year, and do it for 20 years! Insane numbers.