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Evan Horgan vs Darren O'Brien

Cage Legacy Fighting Championship Cage Legacy 21

24 Mar 2024 Ashbourne

Paddy Moran vs Darren O'Brien

Cage Legacy Fighting Championship Cage Legacy 19

30 Sep 2023 Dublin

Jake Gilpin vs Darren O'Brien

IUR Fighting Championships - IUR 6

26 Feb 2023 Newry

Mareks Supe vs Darren O'Brien

IUR Fighting Championships - IUR 4

4 Jun 2022 Newry

Aidan O'Boyle vs Darren O'Brien

IUR Fighting Championships - IUR 3

3 Apr 2022 Newry

Darren O'Brien vs Karl McConway

IUR Fighting Championships - IUR 3

3 Apr 2022 Newry

Ronan Deegan vs Darren O'Brien

Cage Legacy Fighting Championship Cage Legacy 13: Halloween Havoc

16 Oct 2021 Meath

Nauris Bartoska vs Darren O'Brien

Cage Legacy Fighting Championship Cage Legacy 13: Halloween Havoc

16 Oct 2021 Meath

Darren O'Brien vs Abanoub Fares

IUR Fighting Championships - IUR 1

5 Sep 2021 Newry

Taka Mhandu vs Darren O'Brien

Cage Warriors Academy Ireland Cage Warriors Academy Ireland 3

14 Sep 2019 Belfast