While Conor McGregor is a champion fighter, he has faced a series of ups and downs inside - and outside - the Octagon. The Ultimate Fighting Championship (UFC) star began his impressive mixed martial career in 2008 and was signed to the professional league in 2013. Throughout his reign in the UFC, McGregor has collected a series of accolades including the UFC Featherweight Championship, UFC Lightweight Championship, Fight of the Night, Knockout of the Night and more. Three years after his debut, McGregor lost his first match against challenger Nate Diaz in March 2016. One month after the loss, McGregor announced he had decided to retire from fighting. However, his retirement didn't last long. Four months later, McGregor revealed he was returning to the sport to take on Diaz in a rematch. McGregor decided to retire for a second time in March 2019 but reversed the decision the following year to participate in a match against Donald Cerrone. Following his win against Cerrone, McGregor announced in June 2020 he would retire for a third time. Keep scrolling to see McGregor's ups and downs: