Mixed martial arts career
A Tiger Schulmann MMA product, Jimmie Rivera started his career in 2007 when he was 18 years old. After compiling an undefeated 7–0 record as an amateur within only two years, he moved to professional mixed martial arts.
As a professional, he fought only for New Jersey’s promotion Ring of Combat before signing with Bellator in 2009.
Bellator Fighting Championships
King of the Cage
Rivera faced Abel Cullum on September 17, 2010 for the KOTC flyweight title. Rivera won via split decision (49-46 Rivera, 49-46 Rivera, 48-47 Cullum) after five rounds and became the new champion.
The Ultimate Fighter
Rivera appeared in the first episode of The Ultimate Fighter: Team Bisping vs. Team Miller. He lost via TKO in the second round against Dennis Bermudez during the entry round.
Return to Ring of Combat
Rivera returned to ROC on June 15, 2012 against Justin Hickey for the bantamweight title. He won the title via unanimous decision (30-27, 30-27, 30-27) in a three-round match.
Rivera defended his belt once against Joel Roberts on September 14, 2012.
Second Bellator run
World Series of Fighting
Rivera faced Sidemar Honório on September 14, 2013 at WSOF 5. He was able to come through after taking a significant amount of damage in the first round, and managed to recover in the second and third rounds using his strength and wrestling skills. Rivera won the fight via unanimous decision (30-27, 29-28, 29-28).
Ultimate Fighting Championship
Rivera was expected to face Bryan Caraway on January 15, 2017 at UFC Fight Night 103. However, Caraway pulled out of the fight citing an injury, and Rivera rejected the replacement Marlon Vera due to the lack of rank and relevance in the division.
Rivera was expected to face Dominick Cruz on December 30, 2017 at UFC 219. However Cruz suffered a broken arm in training and had to pull out of the fight,  and he was replaced by John Lineker. On December 24, Lineker pulled out of the fight citing a tooth infection. After a failed negotiation with Marlon Moraes in attempt to remain on the card, Rivera announced that he will not compete at the event.
Rivera faced Marlon Moraes on June 1, 2018 in the main event at UFC Fight Night 131. He lost the fight by knockout in the first round due to a head kick and punches. This marked the first time Rivera has been finished in his professional MMA career.
Article source: https://en.wikipedia.org/wiki/Jimmie_Rivera