The welterweight debut of former "Ultimate Fighter" 185-pound cast member
Riddle's injury was confirmed to MMAWeekly.com by sources close to the situation.
Riddle made a great impression on fans during his time on The Ultimate Fighter and after the show wrapped up filming, he relocated to Arizona to train alongside former housemate
In his first official fight in the UFC, Riddle won a decisive unanimous decision over
For the fight in November, Riddle was cutting weight and making his 170-pound debut, but during training for the bout the young fighter fell victim to a knee injury that will likely require surgery and could keep him on the shelf for the better part of six to eight weeks.
No word has come down from the UFC about a possible replacement to step in for Riddle to take on Thomas at this time.
Stay tuned to MMAWeekly.com for more information on this fight as it becomes available.