UFC on Fox 13 Notebook: Litmus Test Stipe Miocic faces the sternest challenge of his career, as he battles former champion Junior dos Santos on Saturday in Phoenix.

UFC on Fox 13 Weigh-in Results: Nate Diaz Misses Weight Junior dos Santos has already reached the Ultimate Fighting Championship mountaintop. Stipe Miocic wants to get there.

Preview: UFC on Fox 13 Former heavyweight champion Junior dos Santos returns from a lengthy layoff to face Stipe Miocic on Saturday in Phoenix.

This Month’s MMA Birthdays: Mark Coleman Turns 50 An ahead-of-his-time innovator who left his imprint on the world of mixed martial arts, Mark Coleman will celebrate his 50th birthday on Dec. 20.

Migration of Legends A growing number of all-time greats, including Royce Gracie and Randy Couture, are choosing to side with Bellator MMA over the UFC.

Sherdog’s Top 10: Bellator MMA Moments Bellator MMA has provided its share of memories, from Cuban demigods and contract disputes to inverted triangles and spinning backfists.

TOP HEAVYWEIGHTS DOS SANTOS & MIOCIC HEADLINE FIRST UFC EVENT IN PHOENIX (PRESS RELEASE) -- Las Vegas – The Ultimate Fighting Championship® announced that its first live event in Phoenix, on Saturday, Dec. 13 at US Airways Center, will be headlined by a pivotal heavyweight clash between former UFC® heavyweight champion...

This Month’s MMA Birthdays: Matt Hughes Turns 41 Having retired in January 2013, the hall of famer still ranks second on the UFC’s all-time list in wins (18) and appearances (25).

Ronaldo ‘Jacare’ Souza Guillotine Submits Gegard Mousasi in UFC Fight Night Main Event Ronaldo “Jacare” Souza was the better man this time.

T.J. Dillashaw Delivers Another Fifth-Round Finish, Denies Joe Soto at UFC 177 Joe Soto found no gold at the end of his rainbow.