The NFL Combine allows college football prospects to showcase their skills in front of pro scouts. Speed is one of the most valued weapons in the NFL for wide receivers, so the 40-yard dash is one of the most important events. Here are the five fastest 40-yard dash times ever recorded at the NFL Combine by wide receivers since switching to an electronic timing system in 1999.Fastest 40-yard dash times by wide receivers in NFL Combine history#1 - John Ross III - 4.22 secondsCincinnati Bengals wide receiver John Ross IIIJohn Ross III not only owns the fastest time by a wide receiver, but his time of 4.22 seconds is the fastest by any player in the Combine's history since switching to an electronic timer. Other players, such as Bo Jackson and Deion Sanders, recorded faster marks but are now considered unofficial because they were clocked on a hand timer.NFL@NFLJohn Ross. Still the 40 king. On this day in 2017, @WatchJRoss set the record with a 4.22 time. : #NFLCombine starting at 4pm ET on @NFLNetwork8:45 AM · Mar 4, 20222238183John Ross. Still the 40 king. 👑On this day in 2017, @WatchJRoss set the record with a 4.22 time. 📺: #NFLCombine starting at 4pm ET on @NFLNetwork https://t.co/6Y8HVZ4IBQ#2 - Rondel Melendez - 4.24 seconds2022 NFL HBCU Combine 40-yard dashRondel Melendez ran a scorching 40-yard dash in 4.24 seconds at the 1999 Combine during the first year the electronic timing system was implemented. His time stood as the fastest in Combine history among all players until John Ross III set a new record at the 2017 Combine.