Robert was attempting to comeback from a devastating knee injury suffered after the 1998 season in a NFL-sanctioned rookie flag football game in Hawaii.
All major knee ligaments were torn along with damaged nerves and Edwards missed the next two seasons (1999 and 2000) while rehabbing the knee.
Robert ran for 1,115 yards and 9 touchdowns during his rookie season.
Edwards participated in the Patriots' June minicamp and suffered a groin injury early in training camp.
The groin injury delayed the comeback as the running back, who scored 4 touchdowns in a 37-17 victory against Florida, could not participate in practice.
He ran out of opportunities to make a good impression on the coaches.
"This in no way detracts from the remarkable accomplishments Robert has achieved through two years of dedication and commitment," said Patriots Head Coach Bill Belichick in an official release. "He has our lasting respect and admiration and his story will always be an inspiration to everyone. We just reached the point where we ran out of time."
Edwards was sufficiently recovered from the groin injury earlier this week to participate in practice but the coaches did not want him to risk further injury.
''Robert has been through the worst already,'' said his father Robert Edwards Sr. to the Boston Globe. ''He has good people working on his behalf [agent Eugene Parker] and they're working right now on his future. After he gets through waivers, Robert can resume his career. He's ready to play. And we all feel Robert will play football again.''
The Patriots reached an injury settlement with Edwards not believed to be more than $200,000. The injury listed was not for the knee but for the groin pull.
Edwards did earn a $102,000 workout bonus and was scheduled to earn $510,000 in base salary this season, the fourth year of the 5-year contract signed in 1998.
In more positive news, former Georgia running back Patrick Pass appears to have won the backup fullback spot after playing some receiver and running back last season.
Photo: David Silverman-Patriots.com