The Wonderlic Cognitive Ability Test is a 12-minute, 50-question exam designed to measure the learning and problem-solving abilities of potential employees.
The NFL began administering the test nearly 30 years ago. The scoring scale operates on a system of one point per correct answer.
Subjects with average intelligence are expected to score in the area of 20 points, and those who can't muster double-digits are considered to be illiterate.
The test doesn't tell everything about a player, only basic intelligence. Positive Wonderlic results don't guarantee NFL success, nor do low scores guarantee a disappointing career.
Dan Marino, for example, scored a 16 on his Wonderlic; the average for NFL quarterbacks is 24.
Former Bengals punter Pat McInally (Harvard) scored the only perfect 50 in the history of the test's administration. He claims the score hurt his draft status since several teams shied away from picking a smart player who could potentially clash with the coaches.
Boston College graduate and Philadelphia Eagles linebacker Mike Mamula scored the only 49 in 1995. Bills quarterback Ryan Fitzpatrick (Harvard), Browns tight end Ben Watson (Georgia) and Chiefs wideout Kevin Curtis (Utah State) have scored the only 48's.
But for every exceptional score, there exist tests where players have struggled to prove they could even read what they were doing.
What follows is a list of the 10 worst Wonderlic scores in NFL history, and the stories of the players who "achieved" them.