In my opinion here are some fights where I think this was the case, not necessarily the reason why they lost. Lesnar vs Overeem was the one that stood out the most to me. It appeared that Lesnar was clearly in it to just cash out. IMO, he didnt have that same "fire" that he used to have. Silva vs Weidman 2 appeared that way as well. Silva went from saying "im done with title fights" till Dana begged him over and over again to take the rematch. Rampage vs Glover was clear to me cus Rampage wanted out of the UFC by then. GSP vs Diaz-I think Diaz didn't give a shit and just wanted that money. He knew he was gonna lose. Jones vs Sonnen-this one was obvious too. Sonnen 100% knew he was gonna lose and even said "idk how i will beat this guy"