Jesus christ, everyone on this thread swearing that everyone runs a 4.3, sure maybe hand timed and with generous clicks.
Only two safeties in the NFL combine in 2016 ran a sub 4.5 40 yard time. Only three safeties in the 2015 draft ran a sub 4.5, and a whopping 4 ran a sub 4.5 in 2014. So in three years not even 10 safeties ran a sub 4.5 time at the combine. Which involves months of dedicated training and practice to get off the line faster etc, with specialized coaches which usually shave a 0.1 off their time. Also for everyone bringing up Kenny Phillips, he was barely below a 4.5, clocking in at 4.48.
The safeties drafted in the first round in the last three years had the following 40 yd times (N/A when they elected not to run, by choice, or by injury): N/A, 4.62, 4.46, 4.58, 4.58, 4.49, N/A, N/A. By the way, yes Ha Ha Clinton dix, the dominant safety only got a 4.58 after months of prepping and training.
Quit this sub 4.5 bull****, it's clear you can be a dominant safety in the ~4.6 range. Now is he a 4.7 guy? No clue, nobody has a clue. Because no one has seen him run in a straight line and timed him. Lots of players look like they're running slow but are actually fast (see: Kaepernick and his 4.53 combine time).
Edit: Just to add another data point, Reed, the best safety of all time, posted a 4.68 combine time. He wasn't fast, but he didn't need to be because he knew where the ball was going before it got there.
Here is a post from 2015 of the top five 40 times at various Nike combines-
American Heritage Combine February 28, 2015--Ft. Lauderdale FL
Tyrin Summers 16 WR FL Clewiston 5-9 161 4.48
Marco Wilson 17 DB FL American Heritage 5-10 163 4.53
Devonta’e Henry-Cole 16 RB FL St. Thomas Aquinas (FL) 5-7.5 177 4.54
Gregori McCrae 16 RB FL Hallandale 5-10 173 4.54
Mike Harley 17 WR FL St. Thomas Aquinas (FL) 5-9.5 144 4.54
Miami Combine---February 18, 2015
Travis Homer RB 16 FL Oxbridge Academy 5-10.5 195 4.48
Tyrin Summers WR 16 FL Clewiston 5-8 151 4.48
Terrence Horne WR 18 FL Miramar 5-8 151 4.49
Joshua Parker WR 16 FL Mount Dora 5-11 165 4.50
Tyrus Knighton WR 16 FL Deerfield Beach 5-9 157 4.51
Nike Combine---Feb. 8, 2015 Honolulu, Hawaii.
Vavae Malepeai RB 2016 HI Mililani 5-11 200 4.44
Charles Watson DB 2017 HI Leilehua 6-0.5 163 4.52
Keoni-Kordell Makekau WR 2016 HI Iolani 5-10 157 4.53
Keikiokalani Misipeka DB 2017 HI Farrington 5-7 168 4.58
Drew Kobayashi WR 2016 HI St. Louis 6-3 190 4.58
Los Angles Combine---- Feb. 22, 2015 Paramount, California.
Darius Smith RB 16 CA Ridgeview 5-6 143 4.50
Marcus Parker WR 16 AZ Centennial (AZ) 5-8 130 4.50
Ryne Miller DB 16 AZ Mesquite (AZ) 5-9 157 4.50
Jaylen Griffin RB 16 CA Point Loma 5-6.5 153 4.54
Darren Chism RB 16 CA Pleasant Grove (CA) 5-11 188 4.54
Nike New Orleans Combine--March 28, 2015
Ricky Thomas DB 16 LA Dutchtown 5-9.5 160 4.57
Clydrick Edwards-Helaire RB 17 LA Catholic (Baton Rouge) 5-7.0 191 4.58
Dalton Bradfield RB 16 MS Germantown (MS) 5-9.5 191 4.62
Tevyn Johnson DB 16 LA H.L. Bourgeois 5-10.5 180 4.63
Dez Eddie RB 16 LA University Academy (LA) 5-6.5 160 4.63
Dallas Nike Combine-----Arlington, Texas on March 14th, 2015.
Devin Duvernay WR 16 TX Sachse 5-10.5 193 4.38
Jordan Prince DB 16 OK North (Edmond) 5-6.5 157 4.40
Cameron Montgomery DB 17 TX George Bush 5-4.5 152 4.45
Troy Ray WR 16 OK Hartshorne 5-10.0 173 4.48
Travis Etienne Jr. RB 17 LA Jennings 5-10.0 188 4.50
Atlanta Combine----Northview High School Georgia on March 21st, 2015.
Marvin Hubbard RB 17 GA Sandy Creek 5-8 176 4.42
Darrell Baker WR 16 GA Hephzibah 6-1 171 4.52
Anthony Gray WR 16 GA Fayette County (GA) 5-11 150 4.54
Ezra Gray DB 16 FL Mosley 5-7 174 4.55
Alex Sands WR 16 GA Newton (GA) 5-7 143 4.55
Washington Nike Combine --April 19 , 2015
Raleigh Sirb RB 16 PA Central Dauphin 5-7.5 186 4.53
Dejuan Ellis QB 18 VA Bishop O'Connell 5-10 152 4.53
Kwincy Hall WR 18 DC St. John's (DC) 5-5 145 4.57
Jesse Stauffer DB 16 MD North Point 5-8 188 4.58
Rohan Martin Jr. DB 16 VA Colonial Forge 5-8.5 158 4.59
North Carolina Nike Combine---- May 9th, 2015.
Kameron Gilliand RB 16 NC T.C. Roberson 5-4 147 4.55
Quinlyn Moore WR 16 NC West Brunswick 5-7 159 4.59
Courtlyn Victrum RB 17 NC Clayton 5-5 165 4.60
Michael Grimsley RB 16 SC South Florence 5-6 162 4.60
Isaac Burton RB 16 NC Heritage (NC) 5-8 155 4.60
New York Nike Combine--- April 26th, 2015.
Diquill Neal DB 16 NJ Hoboken 5-9 151 4.65
Michael Cloppse QB 16 NY Monsignor Farrell 5-10.5 181 4.66
Kiyon Santos DB 16 NJ Don Bosco Prep 5-9 157 4.68
Sean McKeon TE 16 MA Shepherd Hill 6-4.5 227 4.69
Domenic Cozier RB 16 MA Milton Academy 5-7.5 156 4.69
Chicago Nike Combine-- May 3rd, 2015
Destin Porter RB 2016 LA Lutcher 5-7 163 4.65
Isaiah Koran WR 2016 MN North (MN) 5-10 188 4.65
Richard Azunna DB 2016 IL Niles North 5-9.5 189 4.65
Zachery Strawn DB 2016 KS Wellsville (KS) 5-10 154 4.68
Isaac James RB 2016 IN Lowell (IN) 5-10.5 188 4.68