There are 10 divisions in the UFC. Of the 10 champions (not counting Jones or Aldo) 5 have never defended their belt. Only two have defended it (successfully) more than twice. Only two have held the belt since before last year. Champs in order of defences: Mighty Mouse 8 Jo Jedrecek 3 Robbie Lawler 2 DC 1 Dominic Cruz 1 everyone else 0 GSP, Jon Jones, Ronda Rousey, Cain Velasquez, Anderson Silva, Jose Aldo, Conor Mcgregor, all the superstars have been beaten or otherwise taken out of the picture. This is the Churn.