Vitor Belfort made his MMA debut in October 1996, so one would think his experience would be very valuable when he takes on 25-year-old light heavyweight champion Jon Jones. However, Belfort is not even the most experienced challenger Jones has met during his reign as 205-pound titleholder.
The Brazilian's 30 career bouts have prepared him well for almost any UFC opponent, but Jones possesses unparalleled talent and has already proven he can handle veterans of the sport with relative ease. Throw in a significant size disadvantage, and Belfort has his hands full in trying to reclaim the UFC's light heavyweight belt.
Still, whether it was deserved or not, the fact that Belfort is even competing in a UFC title fight at this late stage in his career is an accomplishment in itself. Nearly 16 years have passed since Belfort knocked out Jon Hess to begin his career, making him one of the longest tenured fighters competing inside the Octagon today.
These are the most experienced fighters in each of the UFC's eight weight divisions.
Author's note: No variables were included in determining the fighters listed. Included are simply the fighters with, well, the most experience (i.e. fights).