Question: Who has the fastest 40 yard dash in the nfl combine?
Disambiguated questions and answers: question: Who has the fastest official 40 yard dash at the NFL Combine since electronic timing was implemented?
Who was reported to have run the fastest 40 yard dash ever at the 1986 NFL combine?
Who was claimed to have the fastest ever 40 yard dash at an NFL combine according to hand timing in 2016?
answer: John Ross
Bo Jackson
Jakeem Grant
Natural Questions answer: John Ross (from the Wikipedia article "40-yard dash")