Fifteen inches — nearly half a yard — separate Philadelphia Eagles running back Darren Sproles and Pittsburgh Steelers offensive tackle Alejandro Villanueva, the tallest and shortest players in the NFL.
Sproles and Villanueva aren't alone at either end of the spectrum:
If you jump up one inch, six NFL players stand 5-foot-7, all running backs (Denver's De'Angelo Henderson, Tampa Bay's Jaquizz Rodgers and Atlanta's Terron Ward) or wide receivers (Denver's Isaiah McKenzie, New Orleans' Tommylee Lewis, and Miami's Jakeem Grant).
On the other end of the measuring tape, four NFL offensive tackles stand 6-foot-9, or 15 inches taller than the diminutive running backs.
They are: third-year Pittsburgh OT Alejandro Villanueva (Army), ninth-year Tampa Bay OT Demar Dotson (Southern Miss), second year Detroit OT Brian Mihalik (Boston College), and rookie Washington OT Kevin Bowen (East Central).
Drop one more inch and you find 43 NFL payers listed 6-foot-7, ranging in position from quarterback (Denver's Brock Osweiler AND Paxton Lynch) to tight end, defensive line, offensive line and even a linebacker (Washington's Lynden Trail).