When UFC heavyweight champion Cain Velasquez steps into the octagon to defend his title on June 13, 2015, against Fabricio Werdum at UFC 188, 602 days will have passed since his last fight.
Velasquez stopped Junior Dos Santos in the fifth round at UFC 166 on Oct. 13, 2013.
Since then, he's been out with a torn meniscus and a sprained MCL. Let's take a look at some of the more notable things that occurred in the UFC in the 602 days since Velasquez last fought.
Georges St-Pierre successfully defended his welterweight title against Johny Hendricks at UFC 167 on Nov. 16, 2013, then announced in the octagon that he is walking away from the sport. Although he never used the word retire in any form, St-Pierre has yet to fight again.
The UFC added a new division womens strawweights and crowned its first champion in December 2014 after Season 20 of The Ultimate Fighter featured the new 115-pound fighters.
Anderson Silva breaks his leg at UFC 168 attempting to regain his middleweight title from Chris Weidman, putting him on the shelf for more than a year. He returns on Jan. 31, 2015, to fight Nick Diaz, and a few days later, news broke that he tested positive for performance-enhancing drugs both before and after the fight.
The Nevada State Athletic Commission votes unanimously in February 2014 to stop granting therapeutic use exemptions for testosterone replacement therapy. That day, Vitor Belfort is pulled from his title fight as the UFC says it will ban the use of TRT. In June 2015, the UFC announces a more comprehensive drug testing policy and stricter punishments.
On Nov. 15, 2014, Fabricio Werdum stopped Mark Hunt in the second round to win the interim heavyweight title.
Daniel Cormier, Cain Velasquezs training partner and AKA teammate, dropped down from heavyweight to light heavyweight after UFC 166, lost a title shot against Jon Jones at UFC 182, then won the vacant title against Anthony Johnson at UFC 187.
Ronda Rousey defends her women's bantamweight title four times, lands roles in three major studio movies, appears on the cover of Sports Illustrated and becomes the biggest star in the UFC.
There have been 27 title fights since Velasquez has been out, including the one interim heavyweight title. Reigning champions were featured in 23 of those title fights, with 19 successful defenses.
The UFC announces a new apparel deal with Reebok where fighters no longer will be allowed to wear outside sponsors' gear during fight week. The deal instead pays fighters Reebok sponsor money each time they fight, based on their tenure with Zuffa, the parent company of the UFC. When the deal first was announced in late 2014, fighter sponsor pay was based on the UFC rankings determined by the media.
Donald Cowboy Cerrone fought eight times in a 553-day span between
Jon Jones becomes the first UFC champion to be stripped of his title for disciplinary reasons after his arrest in April 2015 stemming from a felony hit-and-run charge. Jones also is suspended indefinitely by the UFC.