The fight card for UFC 104 in Los Angeles on October 24th is steadily filling up, as a middleweight bout between Jorge Rivera (16-7, 5-5) UFC and Rob Kimmons (22-4, 2-1 UFC) has been added to the line-up, according to MMA Junkie:

A source close to one of the fighters today told MMAjunkie.com (www.mmajunkie.com) bout agreements have been distributed and likely signed.

Although Kimmons is nine years younger than Rivera, he is still the more experience fighter, although Rivera is certainly a veteran and has much more Octagon experience that Kimmons.  Both fighters last competed on the UFN 18 card in April where Rivera won a decision over Nissen Osterneck, and Kimmons submitted Joe Vedepo.  The wins also led to the UFC signing both Rivera and Kimmons to new four-fight contracts recently.

Having recently recommitted himself to an active MMA career after overcoming the tragic death of his teenage daughter Janessa, Rivera is aiming to compete as often as physically possible, especially considering his advanced age relative to the rest of the middleweight dibision.  Rivera's has shown some vulnerability against good grapplers in the past, and Kimmons certainly is a submission specialist with 14 submissions in 22 career wins, but Rivera's muay-thai skills and takedown defense have also negated the ground skills of fighters like Dennis Hallman, Marcelo Azevedo, and Edwin Dewees.