Conor McGregor's Career

Conor McGregor – History 2007-02-17 NR 47 Won (TKO) NR Ciaran Campbell 2008-03-08 45 47↑3 Won (TKO) NR Gary Morris 2008-05-03 46 47↑1 Won (TKO) NR Mo Taylor 2008-06-28 48 45↓3 Lost (Sub.) 49 Artemij Sitenkov 2008-12-12 45 45 Won (TKO) 35 Stephen Bailey 2010-10-09 44 47↑3 Won (TKO) 43 Connor Dillon 2010-11-27 48 47↓1 Lost (Sub.) 61 Joseph Duffy 2011-02-12 47 50↑3 Won (TKO) 48 Hugh Brady 2011-03-12 50 51 Won (KO) 36 Mike Wood 2011-04-16 51 51↑1 Won (KO) 38 Paddy Doherty

Conor McGregor – History 2011-06-11 51 55↑4 Won (TKO) 52 Artur Sowinski 2011-09-08 54 55↑1 Won (TKO) 42 Aaron Jahnsen 2012-02-18 54 57↑3 Won (KO) 54 Steve O'Keefe 2012-06-02 56 58↑2 Won (Sub.) 52 Dave Hill 2012-12-31 58 61↑3 Won (KO) 59 Ivan Buchinger 2013-04-06 61 65↑4 Won (TKO) 65 Marcus Brimage 2013-08-17 65 67↑2 Won (Unan.) 60 Max Holloway 2014-07-19 68 71↑3 Won (TKO) 66 Diego Brandao 2014-09-27 71 75↑4 Won (TKO) 74 Dustin Poirier 2015-01-18 75 NR Versus 71 Dennis Siver

Hopefully the table should be pretty easy to read: date of the fight, rating before the fight, rating after the fight and the difference between the two, the result of the fight, the opponent's rating at the time of the fight and the opponent's name. The circles on the graph correspond to McGregor's ratings after each fight.

McGregor lost to Joseph Duffy (who's just signed with the UFC) in late 2010, but it didn't hurt his rating because Duffy was by far the strongest opponent he'd faced. Siver will be his second-toughest test behind Poirier, although Siver's rating could've been higher: his win over Gamburyan at the end of 2013 was overturned after a failed drug test, and CCR ignores no contests. If that hadn't happened, Siver would be rated 74 today and their fight on Sunday would be nearly a coin toss.