UFC is more unpredictable than a lot of other sports, with upsets happening regularly. This means that even the fighters recognised as being the best in the world sometimes lose.
However, some of the most famous UFC fighters around include Conor McGregor, Khabib Nurmagomedov, Amanda Nunes, Jon Jones, Valentina Shevchenko and Max Holloway.
Rising stars in the world of UFC that it is worth looking out for include Yair Rodriguez, Darren Till, Chris Weidman, Rory MacDonald, Tatiana Suarez, Alexander Gustafsson and Chase Hooper.