Gareth O'Brien - Teams Played Against
| Team | Games | Tries | Goals | DropGoals | Points | First Game Against | Last Game Against |
|---|---|---|---|---|---|---|---|
| Barrow Raiders | 7 | 5 | 22 | 0 | 64 | 28 Apr 2013 | 31 Aug 2019 |
| Batley Bulldogs | 7 | 7 | 20 | 0 | 68 | 12 May 2013 | 30 Jun 2019 |
| Bradford Bulls | 7 | 3 | 11 | 0 | 34 | 28 Apr 2012 | 04 May 2019 |
| Castleford Tigers | 17 | 7 | 29 | 1 | 87 | 13 May 2011 | 12 Apr 2025 |
| Catalans Dragons | 20 | 3 | 29 | 1 | 71 | 31 Mar 2012 | 21 Jun 2025 |
| Dewsbury Rams | 7 | 4 | 32 | 1 | 81 | 26 May 2013 | 15 Jun 2019 |
| Doncaster | 2 | 0 | 3 | 0 | 6 | 27 Apr 2014 | 01 Jun 2014 |
| Featherstone Rovers | 5 | 2 | 14 | 0 | 36 | 11 Sep 2016 | 05 Oct 2019 |
| Halifax Panthers | 3 | 2 | 14 | 0 | 36 | 12 Aug 2018 | 06 Jul 2019 |
| Huddersfield Giants | 19 | 8 | 51 | 2 | 136 | 03 Jun 2013 | 23 Feb 2025 |
| Hull FC | 19 | 2 | 24 | 2 | 58 | 18 Mar 2012 | 06 Mar 2025 |
| Hull Kingston Rovers | 22 | 3 | 33 | 2 | 80 | 03 Jun 2012 | 23 Mar 2025 |
| Hunslet | 2 | 0 | 4 | 0 | 8 | 14 Apr 2013 | 17 Apr 2016 |
| Keighley Cougars | 4 | 2 | 2 | 0 | 12 | 08 May 2011 | 11 May 2014 |
| Leeds Rhinos | 19 | 6 | 21 | 2 | 68 | 08 Jun 2012 | 27 Jun 2025 |
| Leigh Leopards | 9 | 3 | 26 | 0 | 64 | 27 Jun 2015 | 16 Apr 2021 |
| London Broncos | 9 | 2 | 17 | 0 | 42 | 25 Mar 2012 | 25 Aug 2024 |
| North Wales Crusaders | 2 | 1 | 8 | 0 | 20 | 19 May 2013 | 08 Jun 2014 |
| Rochdale Hornets | 5 | 3 | 23 | 1 | 59 | 13 Jun 2014 | 17 Aug 2019 |
| Salford Red Devils | 16 | 1 | 23 | 1 | 51 | 06 May 2012 | 26 Apr 2025 |
| Sheffield Eagles | 3 | 1 | 11 | 0 | 26 | 07 Jul 2018 | 24 May 2019 |
| South Wales Scorpions | 1 | 1 | 0 | 0 | 4 | 10 May 2015 | 10 May 2015 |
| St. George Illawarra Dragons | 1 | 1 | 2 | 0 | 8 | 20 Feb 2015 | 20 Feb 2015 |
| St. Helens | 21 | 1 | 12 | 0 | 28 | 13 Feb 2014 | 20 Sep 2024 |
| Swinton Lions | 3 | 3 | 0 | 0 | 12 | 20 May 2011 | 28 Apr 2019 |
| Toronto Wolfpack | 1 | 1 | 1 | 1 | 7 | 23 Apr 2017 | 23 Apr 2017 |
| Toulouse Olympique | 7 | 1 | 25 | 1 | 55 | 19 May 2018 | 01 Apr 2022 |
| Wakefield Trinity | 18 | 2 | 27 | 2 | 64 | 20 May 2012 | 04 Apr 2025 |
| Warrington Wolves | 17 | 5 | 25 | 0 | 70 | 03 Mar 2016 | 11 May 2025 |
| Whitehaven | 2 | 0 | 3 | 0 | 6 | 02 May 2013 | 18 May 2014 |
| Widnes Vikings | 13 | 2 | 33 | 0 | 74 | 05 Apr 2012 | 16 Feb 2019 |
| Wigan Warriors | 26 | 3 | 28 | 3 | 71 | 11 Mar 2012 | 04 Jul 2025 |
| Workington Town | 1 | 1 | 8 | 0 | 20 | 07 Feb 2025 | 07 Feb 2025 |
| York Knights | 4 | 3 | 8 | 0 | 28 | 10 Feb 2013 | 18 Jun 2023 |