100M World Record : Swrmfmvd0utnqm _ The men's world record has been improved upon twelve times since electronic timing became mandatory in 1977.

100M World Record : Swrmfmvd0utnqm _ The men's world record has been i… Read more 100M World Record : Swrmfmvd0utnqm _ The men's world record has been improved upon twelve times since electronic timing became mandatory in 1977.