3: Daniel Cormier - 567 days
The current light heavyweight and heavyweight champion, Daniel Cormier has won a title in every promotion he has competed in. He first won the light heavyweight title beating Anthony Johnson for the vacant title after Jon Jones had been stripped. Cormier won by submission. He would then go on to defend against Alexander Gustafsson on October 3rd 2015, winning an epic fight by split decision.
DC was then due to face arch-rival Jon Jones, however, Jones failed a USADA drug test and was pulled leaving DC to face a last minute stand-in, Anderson Silva in a non-title fight in which he won by unanimous decision.
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In December 2016, DC was due to again meet Anthony Johnson, Cormier suffered an injury in November which resulted in the bout being postponed until UFC 210.
After 567 days DC finally defended when he faced Anthony Johnson, he won by rear naked choke. There was a hint of controversy in the lead up to this fight when Cormier was 1.2 pounds over the 205 championship weight limit. When Cormier then appeared to lean on a towel to try and gain some support however he was deemed to have made weight.