![Before he was NOTORIOUS.. - CONOR MCGREGOR V KIERAN CAMPBELL - MMA (PRO DEBUT) - FIGHT ARCHIVES 2007 - YouTube Before he was NOTORIOUS.. - CONOR MCGREGOR V KIERAN CAMPBELL - MMA (PRO DEBUT) - FIGHT ARCHIVES 2007 - YouTube](https://i.ytimg.com/vi/_lVt8uUgX78/maxresdefault.jpg)
Before he was NOTORIOUS.. - CONOR MCGREGOR V KIERAN CAMPBELL - MMA (PRO DEBUT) - FIGHT ARCHIVES 2007 - YouTube
Mcgregor's MMA Debut Fight | 13 years ago today, Conor McGregor made his MMA Debut & finished Kieran Campbell. | By MMA History and Combat Sports | Facebook
![Watch rare footage of Conor McGregor winning first ever MMA bout by KO as an 18-year-old as he prepares for Dustin Poirier rematch at UFC 257 | talkSPORT Watch rare footage of Conor McGregor winning first ever MMA bout by KO as an 18-year-old as he prepares for Dustin Poirier rematch at UFC 257 | talkSPORT](https://i.ytimg.com/vi/clKROUtxLMg/mqdefault.jpg)
Watch rare footage of Conor McGregor winning first ever MMA bout by KO as an 18-year-old as he prepares for Dustin Poirier rematch at UFC 257 | talkSPORT
![And a legend was born" - Fans react to 18-year-old Conor McGregor securing TKO victory over Kieran Campbell in first-ever MMA fight And a legend was born" - Fans react to 18-year-old Conor McGregor securing TKO victory over Kieran Campbell in first-ever MMA fight](https://i.ytimg.com/vi/d87ia5Wnh4Y/maxresdefault.jpg)
And a legend was born" - Fans react to 18-year-old Conor McGregor securing TKO victory over Kieran Campbell in first-ever MMA fight
![UFC superstar Conor McGregor hails fighting Scottish ancestors as he shares clip of debut win – The Scottish Sun | The Scottish Sun UFC superstar Conor McGregor hails fighting Scottish ancestors as he shares clip of debut win – The Scottish Sun | The Scottish Sun](https://www.thescottishsun.co.uk/wp-content/uploads/sites/2/2020/02/NINTCHDBPICT000555826534-e1582034169373.jpg?crop=1308px%2C85px%2C2426px%2C1616px&resize=620%2C413)
UFC superstar Conor McGregor hails fighting Scottish ancestors as he shares clip of debut win – The Scottish Sun | The Scottish Sun
![Watch rare footage of Conor McGregor winning first ever MMA bout by KO as an 18-year-old as he prepares for Dustin Poirier rematch at UFC 257 | talkSPORT Watch rare footage of Conor McGregor winning first ever MMA bout by KO as an 18-year-old as he prepares for Dustin Poirier rematch at UFC 257 | talkSPORT](https://talksport.com/wp-content/uploads/sites/5/2021/01/Conor.png)
Watch rare footage of Conor McGregor winning first ever MMA bout by KO as an 18-year-old as he prepares for Dustin Poirier rematch at UFC 257 | talkSPORT
![VIDEO | Lanky 18-year-old Conor McGregor shines bright in amateur fight vs. Ciaran Campbell | BJPenn.com VIDEO | Lanky 18-year-old Conor McGregor shines bright in amateur fight vs. Ciaran Campbell | BJPenn.com](https://www.bjpenn.com/wp-content/uploads/2016/11/Conor-McGregor-Ciaran-Campbell-fight.png)