Youngest fighters atop the UFC rankings since 2013

What counts. THIS IS NOT THE YOUNGEST UFC CHAMPION. Age is measured on the first TABLE they appear as champion, which is the week after the belt was won and not the night it was won, and the tables only start in February 2013. The youngest UFC champions is the other page, measured on the night the belt was won, over the whole history of the titles. A champion whose stated date of birth we do not hold is absent rather than estimated, and a reign that was already running in February 2013 began before this record starts. This is the undisputed title. The source reserves the champion line for the undisputed belt and publishes an interim champion inside the numbered list instead, so an interim reign is not a row here — that is how the tables are published and we have not rewritten them. 1 ranked name is left out entirely — Bruno Silva is shared by two different fighters our source roster cannot tell apart, so any career total under it would be two people's added together. That page is withheld for the same reason. Ties. 2 of the rows below share the same 31 years and 5 days. Where two bouts share a value the older one is listed first — the first fight to reach a mark is the one that reached it. Where it comes from. Every number on this page is counted from the official UFC rankings tables themselves — the same tables the division pages let you slide back through, one week at a time, so any row here can be checked against the week it came from. A week is one published table: the UFC has missed weeks, and nothing here fills them in. Each name links that fighter’s own page; a ranked fighter we hold no page for is printed as plain text rather than dropped from the count. Slide back through the tables yourself on any division page.