Conor Anthony McGregor (Irish: Conch??r Ant??in Mac Gr??ag??ir; born 14 July 1988) is an Irish professional mixed martial artist and boxer. He is the former Ultimate Fighting Championship (UFC) featherweight and lightweight winner. As of 1 July 2019, he is ranked #3 at the official UFC lightweight positions and #9 in the official UFC pound-for-pound ranks.
McGregor began his MMA career in 2008 and, in 2012, he won both the Cage Warriors Featherweight and Lightweight Championships, holding both names simultaneously before vacating them to signal with the UFC. In 2015, at UFC 194, he conquered Jos?? Aldo for the UFC Featherweight Championship via knockout 13 minutes to the first round, which is the fastest victory in UFC title history. Upon beating Eddie Alvarez for the UFC Lightweight Championship at UFC 205, McGregor became the first fighter in UFC history to maintain titles in two weight divisions simultaneously.
McGregor started his professional boxing career in 2017. In his introduction boxing match, he had been defeated by Floyd Mayweather Jr.He is the biggest pay-per-view (PPV) draw MMA history, having headlined five from the six highest-selling UFC pay-per-view occasions. His headline bout with Khabib Nurmagomedov in UFC 229 drew 2.4 million PPV buys, the most ever for an MMA event. His boxing match with Mayweather drew 4.3 million PPV buys in North America, the second most from history.On 9 March 2008, McGregor had his first pro MMA bout, as a lightweight, defeating Gary Morris using a second-round TKO. Following McGregor won his second battle against Mo Taylor, he made his featherweight debut in a loss via submission against Artemij Sitenkov. Following a victory at featherweight in his next bout against Stephen Bailey, McGregor considered a different career path before his mum contacted his coach John Kavanagh and reinvigorated him to keep on pursuing mixed martial arts. 
McGregor then won his next fight, also at featherweight, against Connor Dillon, before moving back to lightweight to get a fight against Joseph Duffy, where he received his second expert reduction after submitting to an arm-triangle choke. Following this, throughout 2011 and 2012, McGregor went on an eight-fight winning series, through which he won both the CWFC Featherweight and Lightweight championships, making him the first European professional mixed martial artist to hold names in two branches simultaneously. Back in February 2013, UFC president Dana White made a trip to Dublin, Ireland to receive a Gold Medal of Honorary Patronage in Trinity College and has been inundated with requests to sign McGregor into the UFC. After a meeting McGregor, and talking with UFC CEO Lorenzo Fertitta, White offered him a contract days later.
Ultimate Fighting Championship (2013–gift )
UFC debut In February 2013, the Ultimate Fighting Championship (UFC) declared that they had signed McGregor into a multi-fight contract.  In linking, McGregor became only the second fighter from Ireland to compete for the company, after fellow SBG team member Tom Egan.
On 6 April 2013, McGregor made his UFC debut against Marcus Brimage about the preliminary card of UFC on Fuel TV: Mousasi vs. Latifi.  Brimage started the fight aggressively, meeting McGregor at the middle of the octagon before starting a flurry of strikes to push him . McGregor, repeatedly throwing a counter left hand, found little success with his first striking. After discovering that Brimage was susceptible to some snap kick directed in his chest and torso, McGregor began to employ a looping left hand uppercut, throwing every time Brimage would move forward into striking variety. All these uppercuts grounded Brimage shortly after McGregor started to use them. The bout was stopped 1:07 into the first round.  The win also earned McGregor his first”Knockout of the Night” award. 
McGregor was anticipated to face Andy Ogle on 17 August 2013 at UFC Fight Night 26, but Ogle pulled from this bout citing an accident and has been replaced by Max Holloway.  McGregor bewildered Holloway together with his unusual boxing technique, and his incorporation of a huge variety of taekwondo kicks, many of which are not used in MMA to a significant level. McGregor managed to restrain the striking range by using long, non-committal low side kicks to Holloway’s knee and shin, and initiate combinations by leaping in with bike and switch kicks. After the fight was brought into the floor, McGregor maintained top control, performing various positional advances, and mitigating his opponent’s offence on the ground.  McGregor won the fight by unanimous decision (30–27, 30–27, and 30–26). Following the bout with Holloway, an MRI scan showed that McGregor had torn his anterior cruciate ligament (ACL) during the bout and would require operation, keeping him out of action for up to ten months. 
Return after trauma McGregor was anticipated to face Cole Miller on 19 July 2014 at UFC Fight Night 46 within his comeback bout after recovering from his ACL injury.  But, Miller pulled out of this bout citing a thumb injury and was replaced by Diego Brand??o.  McGregor fought Brand??o in front of a loud, rowdy crowd of 9,500 in The O2 in his hometown of Dublin, Ireland. McGregor began the fight with a touch spinning side kick, before finding his range and landing various taekwondo kicks, and left counters. Brand??o, a Brazilian Jiu-Jitsu black belt, tried to instigate two takedowns, so that he could take advantage of his grappling pedigree, but both efforts were avoided by McGregor. Nonetheless, a lot of the fight was spent on the ground, as McGregor achieved a takedown 1:20 to the bout. After the fight returned to the toes in the third minute, McGregor began to employ his left hand crossover, and began to cut the cage. Brand??o, trapped between the octagon and McGregor, fell to his side after being hit with another left hand cross as the struggle went into its fourth second.  The battle has been formally halted by referee Leon Roberts at 4:05 of the first round. The win earned McGregor his first”Performance of the Night” award. 
Prior to his next bout, McGregor met with Lorenzo Fertitta and signed up a fresh multi-fight contract with the UFC. McGregor next confronted Dustin Poirier on 27 September 2014 in UFC 178.  The bout was among the most anticipated fights on the UFC 178 card, with McGregor and Poirier two of only four men involved in the pre-fight press conference, alongside the initially scheduled headliners Jon Jones and Daniel Cormier.  Part of the expectancy stemmed in the challenge that the match-up posed: Poirier was McGregor’s first opponent ranked in the UFC’s top ten featherweights.  Regardless of McGregor landing 9 significant strikes on Poirier’s 10, he was able to secure a success early on in the first round, by pushing Poirier on his rear foot, before exploding with a left hook behind Poirier’s ear, forcing referee Herb Dean to step in. The end officially came at 1:46 to the first round.  This marked Poirier’s initial UFC reduction via KO/TKO, and earned McGregor his second straight”Performance of the Night” award.  In the post-fight interview with commentator Joe Rogan, McGregor mentioned the UFC Featherweight Championship as his next target from the organisation, saying that”If [the UFC] desire, I’ll eliminate Chad Mendes and step into and give the fans what they need; Aldo vs. McGregor.”
Read more: sportsnewsking.com