[1] Post was drafted in the fourth round of the 1967 draft by the AFL's San Diego Chargers after Bum Phillips (hired to serve as defensive coordinator for the team after serving the position for the University of Houston the previous two years) put in a good word for him to head coach Sid Gillman.
Originally making the team as a flanker for Lance Alworth, Post found himself asked to take over from an aging and injured Paul Lowe in the backfield.
However, Post's breakthrough game came against Buffalo, where he rushed for 121 yards on 20 carries with his first touchdown in his career in a 37–17 win.
[5] In 2008, NFL Films named him the ninth most elusive runner of all time, as served by his 193-pound frame.
[6] Post declined soon after due to his problems with his knees, as he stated he had five operations in the span of five years.