Cornell Green wasn't just a Cowboy player that never played college ball.
Green developed into a 1st team All Pro CB by his fifth season, a Pro Bowler by his 4th. By 1970 Green was a four time Pro Bowler, a three time 1st team All Pro at CB
In 1979 the Cowboys traded for Herb Adderly, future Hall of Fame CB. They had future Hall of Famer Mel Renfro playing the other CB, so they switched Green to strong safety.
At SS, Cornell Green was a two time Pro Bowler.
Green played 13 seasons for the Cowboys. He started every single game during the last 12 of those seasons. He played in both championship games against Green Bay as well as Super Bowls 5 & 6.
Again, never played college football.
This is another one of those guys that will never get his fair share of credit. This was due to the amount of Cowboy talent at the time in addition to the general animosity towards the franchise by other franchises and their media. This bias was real.
Cornell Greens accomplishments were just as worthy as the majority of Hall of Fame DB's