How many fighters have you seen change their fate midway?

What comes to mind is watching golovkin losing to canelo, then suddenly he started to expend more energy pressing the action during the second fight. Heck, ggg was gulping down air like an asthmatic pushing that frenetic pace. It didn't do much for the outcome but he sure picked it up. Second is lamon Brewster vs wlad: he withered the Klitschko storm and was rewarded with a sitting duck literally Klitschko with his hands down too tired to move them up. Third would be Taylor vs Chavez, last round ten seconds jcc put it on meldrick. Meldrick won the battle but lost the war that night. What are examples you guys think of?