Question: Who has the fastest 40 yard dash in the nfl combine?
qaPairs: question: Who has the fastest official 40 yard dash at the NFL Combine since electronic timing was implemented?
answer: John Ross
question: Who was reported to have run the fastest 40 yard dash ever at the 1986 NFL combine?
answer: Bo Jackson
question: Who was claimed to have the fastest ever 40 yard dash at an NFL combine according to hand timing in 2016?
answer: Jakeem Grant