Matthew Riddle, a longtime UFC fighter who recently signed with Bellator MMA, announced his retirement on Monday night.

Riddle (7-3 MMA, 0-0 BFC) was slated to fight Luis Melo (29-11 MMA, 0-0 BFC) next week at Bellator 100, a Sept. 20 event that features the opening round of a Season 9 welterweight tournament.

However, according to Riddle, he cracked a rib and has decided to call it quits due to financial reasons.

As he wrote on Twitter: I'm retiring from MMA today, I cracked my rib and I can't fight sept 20th @BellatorMMA can't give me a fight this year so I can't afford it!"

Bellator officials haven't formally announced the scratch or a replacement.
http://www.mmajunkie.com/news/2013/0...ces-retirement