Anthony Mason.
Didn't play D1 or even D2 college ball, played in the NAIA at Tennessee State.
3rd round draft pick in '88.
Cut by the Blazers before ever playing.
Played in Turkey, Venezula, rhe CBA, and the USBL.
In 89-90, he could only get in 21 games and play a total of 108 minutes for the Nets who won a total of 17 games that year (worst in the league). In 90-91, he could only get in 3 games and play 21 minutes for the 20 win Denver Nuggets (also worst in the league that year). So basically the 2 worst teams in the league gave him a look and passed. That's usually not a good sign for your basketball career.
Finally Pat Riley signed the 25 year old Mason in '91 and he became a stud. All-Star, 6th man of the year, All NBA, and All-Defensive team, and of course some cool haircuts. Who would have thunk it?