What is the best UFC event of all time?

UFC 100

The centennial milestone event headlined by Brock Lesnar's dominant defense against Frank Mir, with Georges St-Pierre and Dan Henderson also winning title fights on the same night.

UFC 248

Israel Adesanya vs. Yoel Romero and Weili Zhang vs. Joanna Jedrzejczyk — the latter widely called the greatest women's MMA fight in history — made for an unforgettable double header.