Smallest victories For Twenty20 Cup (England) - Glamorgan
By runs
Winner | Margin | Balls Rem | Target | Overs | Opposition | Ground | Match Date | Scorecard |
| 1 run | - | 180 | 20.0 | v Kent | Tunbridge Wells | 17 Jul 2015 | Twenty20 | |
| 1 run | - | 184 | 20.0 | v Somerset | Taunton | 13 Aug 2017 | Twenty20 | |
| 1 run | - | 154 | 20.0 | v Surrey | Cardiff | 29 Jun 2021 | Twenty20 | |
| 2 runs | - | 138 | 20.0 | v Sussex | Cardiff | 23 Jun 2011 | Twenty20 | |
| 2 runs | - | 42 | 6.0 | v Somerset | Cardiff | 13 Jun 2015 | Twenty20 | |
| 2 runs | - | 202 | 20.0 | v Gloucs | Cardiff | 3 Aug 2018 | Twenty20 | |
| 2 runs | - | 177 | 20.0 | v Somerset | Taunton | 4 Jul 2025 | Twenty20 | |
| 3 runs | - | 171 | 20.0 | v Somerset | Taunton | 28 Jun 2015 | Twenty20 | |
| 4 runs | - | 193 | 20.0 | v Surrey | The Oval | 11 Jul 2014 | Twenty20 | |
| 4 runs | - | 170 | 20.0 | v Middlesex | Cardiff | 5 Jun 2015 | Twenty20 | |
| 5 runs | - | 58 | 8.0 | v Warwickshire | Cardiff | 17 Jun 2012 | Twenty20 | |
| 6 runs | - | 182 | 20.0 | v Surrey | The Oval | 4 Aug 2017 | Twenty20 | |
| 6 runs | - | 199 | 20.0 | v Essex | Cardiff | 7 Aug 2018 | Twenty20 | |
| 7 runs | - | 177 | 20.0 | v Somerset | Taunton | 6 Jun 2014 | Twenty20 | |
| 10 runs | - | 158 | 17.0 | v Northants | Cardiff | 20 Jun 2008 | Twenty20 | |
| 10 runs | - | 165 | 20.0 | v Surrey | Cardiff | 9 Jul 2010 | Twenty20 | |
| 10 runs | - | 162 | 20.0 | v Hampshire | Southampton | 16 May 2014 | Twenty20 | |
| 13 runs | - | 146 | 13.0 | v Kent | Canterbury | 16 Jul 2024 | Twenty20 | |
| 14 runs | - | 171 | 20.0 | v Somerset | Cardiff | 13 Jun 2008 | Twenty20 | |
| 15 runs | - | 151 | 20.0 | v Gloucs | Bristol | 29 Aug 2020 | Twenty20 | |
| 17 runs | - | 189 | 20.0 | v Gloucs | Cardiff | 18 Sep 2020 | Twenty20 | |
| 18 runs | - | 199 | 20.0 | v Sussex | Arundel | 9 Jul 2017 | Twenty20 | |
| 19 runs | - | 192 | 20.0 | v Gloucs | Bristol | 12 Jun 2015 | Twenty20 | |
| 20 runs | - | 141 | 14.1 | v Worcs | Worcester | 15 Jul 2004 | Twenty20 | |
| 21 runs | - | 151 | 20.0 | v Middlesex | Cardiff | 18 Jun 2021 | Twenty20 | |
| 22 runs | - | 84 | 9.0 | v Warwickshire | Birmingham | 8 Jul 2012 | Twenty20 | |
| 23 runs | - | 182 | 20.0 | v Hampshire | Southampton | 3 Jul 2015 | Twenty20 | |
| 24 runs | - | 215 | 18.0 | v Sussex | Hove | 5 Jul 2024 | Twenty20 | |
| 25 runs | - | 241 | 19.3 | v Surrey | The Oval | 15 May 2015 | Twenty20 | |
| 25 runs | - | 177 | 20.0 | v Gloucs | Bristol | 25 Jul 2017 | Twenty20 | |
| 25 runs | - | 200 | 20.0 | v Kent | Canterbury | 30 Jul 2017 | Twenty20 | |
| 25 runs | - | 184 | 20.0 | v Sussex | Cardiff | 2 Jun 2024 | Twenty20 | |
| 26 runs | - | 183 | 18.5 | v Essex | Cardiff | 7 Jul 2024 | Twenty20 | |
| 28 runs | - | 217 | 20.0 | v Hampshire | Cardiff | 30 Aug 2019 | Twenty20 | |
| 29 runs | - | 239 | 20.0 | v Middlesex | Northwood | 31 May 2023 | Twenty20 | |
| 32 runs | - | 163 | 19.1 | v Gloucs | Cardiff | 14 Jul 2004 | Twenty20 | |
| 32 runs | - | 220 | 20.0 | v Sussex | Hove | 4 Jun 2023 | Twenty20 | |
| 32 runs | - | 184 | 20.0 | v Gloucs | Cardiff | 18 Jun 2023 | Twenty20 | |
| 35 runs | - | 191 | 17.2 | v Kent | Canterbury | 3 Jul 2022 | Twenty20 | |
| 39 runs | - | 167 | 19.0 | v Gloucs | Cardiff | 27 May 2009 | Twenty20 | |
| 40 runs | - | 221 | 19.5 | v Essex | Chelmsford | 12 Jun 2025 | Twenty20 | |
| 40 runs | - | 190 | 20.0 | v Gloucs | Bristol | 15 Jun 2025 | Twenty20 | |
| 45 runs | - | 183 | 17.5 | v Middlesex | Cardiff | 3 Jun 2011 | Twenty20 | |
| 46 runs | - | 160 | 18.3 | v Sussex | Cardiff | 7 Jul 2016 | Twenty20 | |
| 52 runs | - | 185 | 18.5 | v Middlesex | Cardiff | 18 Jul 2025 | Twenty20 | |
| 55 runs | - | 177 | 15.5 | v Kent | Cardiff | 17 Jun 2016 | Twenty20 | |
| 56 runs | - | 171 | 19.0 | v Worcs | Cardiff | 23 Jun 2003 | Twenty20 | |
| 58 runs | - | 161 | 14.0 | v Worcs | Worcester | 28 Jun 2013 | Twenty20 | |
| 63 runs | - | 169 | 16.5 | v Hampshire | Southampton | 6 Jul 2018 | Twenty20 | |
| 120 runs | - | 244 | 13.3 | v Somerset | Cardiff | 19 Jul 2024 | Twenty20 |
By wickets
Winner | Margin | Balls Rem | Target | Overs | Opposition | Ground | Match Date | Scorecard |
| 1 wicket | - | 186 | 20.0 | v Somerset | Cardiff | 30 Jun 2006 | Twenty20 | |
| 2 wickets | - | 168 | 20.0 | v Essex | Chelmsford | 13 Jul 2018 | Twenty20 | |
| 2 wickets | 5 | 162 | 19.1 | v Gloucs | Bristol | 26 May 2023 | Twenty20 | |
| 3 wickets | 10 | 174 | 18.2 | v Middlesex | Lord's | 6 Jun 2024 | Twenty20 | |
| 4 wickets | 17 | 103 | 17.1 | v Middlesex | Richmond | 14 Jun 2011 | Twenty20 | |
| 4 wickets | 5 | 119 | 19.1 | v Warwickshire | Cardiff | 3 Jul 2013 | Twenty20 | |
| 4 wickets | 6 | 195 | 19.0 | v Surrey | The Oval | 31 Jul 2018 | Twenty20 | |
| 4 wickets | 6 | 150 | 19.0 | v Sussex | Cardiff | 19 Jun 2022 | Twenty20 | |
| 5 wickets | 5 | 163 | 19.1 | v Northants | Northampton | 2 Jul 2004 | Twenty20 | |
| 5 wickets | 6 | 159 | 19.0 | v Warwickshire | Cardiff | 19 Jul 2004 | Twenty20 | |
| 5 wickets | 4 | 143 | 19.2 | v Somerset | Cardiff | 26 Jun 2007 | Twenty20 | |
| 5 wickets | 3 | 169 | 19.3 | v Surrey | The Oval | 4 Jul 2010 | Twenty20 | |
| 5 wickets | 5 | 158 | 19.1 | v Worcs | Cardiff | 23 Jul 2013 | Twenty20 | |
| 5 wickets | - | 179 | 20.0 | v Sussex | Cardiff | 30 May 2014 | Twenty20 | |
| 5 wickets | 23 | 142 | 16.1 | v Hampshire | Cardiff | 3 Jun 2016 | Twenty20 | |
| 5 wickets | - | 220 | 20.0 | v Essex | Chelmsford | 16 Jul 2017 | Twenty20 | |
| 5 wickets | 27 | 125 | 15.3 | v Middlesex | Northwood | 1 Jun 2025 | Twenty20 | |
| 6 wickets | 10 | 171 | 18.2 | v Warwickshire | Birmingham | 28 Jun 2006 | Twenty20 | |
| 6 wickets | 7 | 142 | 18.5 | v Worcs | Worcester | 27 Jun 2008 | Twenty20 | |
| 6 wickets | 9 | 149 | 18.3 | v Gloucs | Bristol | 28 Jun 2009 | Twenty20 | |
| 6 wickets | 5 | 149 | 19.1 | v Gloucs | Cardiff | 4 Jun 2010 | Twenty20 | |
| 6 wickets | 3 | 185 | 19.3 | v Middlesex | Richmond | 3 Jul 2014 | Twenty20 | |
| 6 wickets | 7 | 169 | 18.5 | v Gloucs | Bristol | 10 Jun 2016 | Twenty20 | |
| 6 wickets | 2 | 191 | 19.4 | v Worcs | Worcester | 20 Sep 2020 | Twenty20 | |
| 6 wickets | 19 | 114 | 16.5 | v Essex | Cardiff | 2 Jun 2022 | Twenty20 | |
| 6 wickets | 6 | 184 | 19.0 | v Essex | Cardiff | 6 Jun 2025 | Twenty20 | |
| 6 wickets | 50 | 119 | 11.4 | v Kent | Cardiff | 6 Jul 2025 | Twenty20 | |
| 7 wickets | 5 | 164 | 19.1 | v Worcs | Cardiff | 27 Jun 2006 | Twenty20 | |
| 7 wickets | 4 | 115 | 19.2 | v Hampshire | Cardiff | 8 Jun 2010 | Twenty20 | |
| 7 wickets | 14 | 192 | 17.4 | v Essex | Chelmsford | 11 Jun 2010 | Twenty20 | |
| 7 wickets | 7 | 167 | 18.5 | v Middlesex | Cardiff | 26 Jun 2010 | Twenty20 | |
| 7 wickets | 12 | 153 | 18.0 | v Somerset | Cardiff | 22 Jul 2016 | Twenty20 | |
| 7 wickets | 6 | 100 | 13.0 | v Middlesex | Cardiff | 18 Aug 2017 | Twenty20 | |
| 7 wickets | 43 | 132 | 12.5 | v Middlesex | Richmond | 5 Aug 2018 | Twenty20 | |
| 7 wickets | 24 | 99 | 16.0 | v Northants | Cardiff | 13 Sep 2020 | Twenty20 | |
| 7 wickets | 6 | 154 | 19.0 | v Essex | Cardiff | 13 Jun 2021 | Twenty20 | |
| 7 wickets | 7 | 151 | 18.5 | v Sussex | Hove | 26 May 2022 | Twenty20 | |
| 7 wickets | 18 | 190 | 17.0 | v Kent | Cardiff | 2 Jun 2023 | Twenty20 | |
| 8 wickets | 3 | 194 | 19.3 | v Somerset | Taunton | 5 Jul 2004 | Twenty20 | |
| 8 wickets | 6 | 62 | 7.0 | v Gloucs | Cardiff | 15 Jul 2011 | Twenty20 | |
| 8 wickets | 14 | 127 | 17.4 | v Warwickshire | Rugby | 6 Jul 2013 | Twenty20 | |
| 8 wickets | 48 | 109 | 12.0 | v Gloucs | Cardiff | 25 Jul 2014 | Twenty20 | |
| 8 wickets | 46 | 94 | 12.2 | v Surrey | The Oval | 26 May 2016 | Twenty20 | |
| 8 wickets | 25 | 152 | 15.5 | v Hampshire | Cardiff | 10 Aug 2018 | Twenty20 | |
| 8 wickets | 34 | 172 | 14.2 | v Middlesex | Cardiff | 21 Jun 2022 | Twenty20 | |
| 9 wickets | 28 | 126 | 15.2 | v Somerset | Cardiff | 12 Jul 2013 | Twenty20 | |
| 9 wickets | 25 | 111 | 15.5 | v Surrey | Cardiff | 24 Jun 2016 | Twenty20 | |
| 9 wickets | 21 | 145 | 16.3 | v Middlesex | Richmond | 8 Jul 2016 | Twenty20 | |
| 9 wickets | 38 | 124 | 13.4 | v Leics | Cardiff | 23 Aug 2017 | Twenty20 | |
| 10 wickets | 45 | 129 | 12.3 | v Gloucs | Cardiff | 5 Jul 2005 | Twenty20 | |
| 10 wickets | 36 | 82 | 14.0 | v Gloucs | Bristol | 10 Jul 2011 | Twenty20 |
By balls remaining in the second innings
Winner | Margin | Balls Rem | Target | Overs | Max | Opposition | Ground | Match Date | Scorecard |
| Glamorgan | 1 wicket | - | 186 | 20.0 | 20.0 | v Somerset | Cardiff | 30 Jun 2006 | Twenty20 |
| Glamorgan | 5 wickets | - | 179 | 20.0 | 20.0 | v Sussex | Cardiff | 30 May 2014 | Twenty20 |
| Glamorgan | 5 wickets | - | 220 | 20.0 | 20.0 | v Essex | Chelmsford | 16 Jul 2017 | Twenty20 |
| Glamorgan | 2 wickets | - | 168 | 20.0 | 20.0 | v Essex | Chelmsford | 13 Jul 2018 | Twenty20 |
| 6 wickets | 2 | 191 | 19.4 | 20.0 | v Worcs | Worcester | 20 Sep 2020 | Twenty20 | |
| 8 wickets | 3 | 194 | 19.3 | 20.0 | v Somerset | Taunton | 5 Jul 2004 | Twenty20 | |
| 5 wickets | 3 | 169 | 19.3 | 20.0 | v Surrey | The Oval | 4 Jul 2010 | Twenty20 | |
| 6 wickets | 3 | 185 | 19.3 | 20.0 | v Middlesex | Richmond | 3 Jul 2014 | Twenty20 | |
| 5 wickets | 4 | 143 | 19.2 | 20.0 | v Somerset | Cardiff | 26 Jun 2007 | Twenty20 | |
| 7 wickets | 4 | 115 | 19.2 | 20.0 | v Hampshire | Cardiff | 8 Jun 2010 | Twenty20 | |
| 5 wickets | 5 | 163 | 19.1 | 20.0 | v Northants | Northampton | 2 Jul 2004 | Twenty20 | |
| 7 wickets | 5 | 164 | 19.1 | 20.0 | v Worcs | Cardiff | 27 Jun 2006 | Twenty20 | |
| 6 wickets | 5 | 149 | 19.1 | 20.0 | v Gloucs | Cardiff | 4 Jun 2010 | Twenty20 | |
| 4 wickets | 5 | 119 | 19.1 | 20.0 | v Warwickshire | Cardiff | 3 Jul 2013 | Twenty20 | |
| 5 wickets | 5 | 158 | 19.1 | 20.0 | v Worcs | Cardiff | 23 Jul 2013 | Twenty20 | |
| 2 wickets | 5 | 162 | 19.1 | 20.0 | v Gloucs | Bristol | 26 May 2023 | Twenty20 | |
| 5 wickets | 6 | 159 | 19.0 | 20.0 | v Warwickshire | Cardiff | 19 Jul 2004 | Twenty20 | |
| 8 wickets | 6 | 62 | 7.0 | 8.0 | v Gloucs | Cardiff | 15 Jul 2011 | Twenty20 | |
| 7 wickets | 6 | 100 | 13.0 | 14.0 | v Middlesex | Cardiff | 18 Aug 2017 | Twenty20 | |
| 4 wickets | 6 | 195 | 19.0 | 20.0 | v Surrey | The Oval | 31 Jul 2018 | Twenty20 | |
| 7 wickets | 6 | 154 | 19.0 | 20.0 | v Essex | Cardiff | 13 Jun 2021 | Twenty20 | |
| 4 wickets | 6 | 150 | 19.0 | 20.0 | v Sussex | Cardiff | 19 Jun 2022 | Twenty20 | |
| 6 wickets | 6 | 184 | 19.0 | 20.0 | v Essex | Cardiff | 6 Jun 2025 | Twenty20 | |
| 6 wickets | 7 | 142 | 18.5 | 20.0 | v Worcs | Worcester | 27 Jun 2008 | Twenty20 | |
| 7 wickets | 7 | 167 | 18.5 | 20.0 | v Middlesex | Cardiff | 26 Jun 2010 | Twenty20 | |
| 6 wickets | 7 | 169 | 18.5 | 20.0 | v Gloucs | Bristol | 10 Jun 2016 | Twenty20 | |
| 7 wickets | 7 | 151 | 18.5 | 20.0 | v Sussex | Hove | 26 May 2022 | Twenty20 | |
| 6 wickets | 9 | 149 | 18.3 | 20.0 | v Gloucs | Bristol | 28 Jun 2009 | Twenty20 | |
| 6 wickets | 10 | 171 | 18.2 | 20.0 | v Warwickshire | Birmingham | 28 Jun 2006 | Twenty20 | |
| 3 wickets | 10 | 174 | 18.2 | 20.0 | v Middlesex | Lord's | 6 Jun 2024 | Twenty20 | |
| 7 wickets | 12 | 153 | 18.0 | 20.0 | v Somerset | Cardiff | 22 Jul 2016 | Twenty20 | |
| 7 wickets | 14 | 192 | 17.4 | 20.0 | v Essex | Chelmsford | 11 Jun 2010 | Twenty20 | |
| 8 wickets | 14 | 127 | 17.4 | 20.0 | v Warwickshire | Rugby | 6 Jul 2013 | Twenty20 | |
| 4 wickets | 17 | 103 | 17.1 | 20.0 | v Middlesex | Richmond | 14 Jun 2011 | Twenty20 | |
| 7 wickets | 18 | 190 | 17.0 | 20.0 | v Kent | Cardiff | 2 Jun 2023 | Twenty20 | |
| 6 wickets | 19 | 114 | 16.5 | 20.0 | v Essex | Cardiff | 2 Jun 2022 | Twenty20 | |
| 9 wickets | 21 | 145 | 16.3 | 20.0 | v Middlesex | Richmond | 8 Jul 2016 | Twenty20 | |
| 5 wickets | 23 | 142 | 16.1 | 20.0 | v Hampshire | Cardiff | 3 Jun 2016 | Twenty20 | |
| 7 wickets | 24 | 99 | 16.0 | 20.0 | v Northants | Cardiff | 13 Sep 2020 | Twenty20 | |
| 9 wickets | 25 | 111 | 15.5 | 20.0 | v Surrey | Cardiff | 24 Jun 2016 | Twenty20 | |
| 8 wickets | 25 | 152 | 15.5 | 20.0 | v Hampshire | Cardiff | 10 Aug 2018 | Twenty20 | |
| 5 wickets | 27 | 125 | 15.3 | 20.0 | v Middlesex | Northwood | 1 Jun 2025 | Twenty20 | |
| 9 wickets | 28 | 126 | 15.2 | 20.0 | v Somerset | Cardiff | 12 Jul 2013 | Twenty20 | |
| 8 wickets | 34 | 172 | 14.2 | 20.0 | v Middlesex | Cardiff | 21 Jun 2022 | Twenty20 | |
| 10 wickets | 36 | 82 | 14.0 | 20.0 | v Gloucs | Bristol | 10 Jul 2011 | Twenty20 | |
| 9 wickets | 38 | 124 | 13.4 | 20.0 | v Leics | Cardiff | 23 Aug 2017 | Twenty20 | |
| 7 wickets | 43 | 132 | 12.5 | 20.0 | v Middlesex | Richmond | 5 Aug 2018 | Twenty20 | |
| 10 wickets | 45 | 129 | 12.3 | 20.0 | v Gloucs | Cardiff | 5 Jul 2005 | Twenty20 | |
| 8 wickets | 46 | 94 | 12.2 | 20.0 | v Surrey | The Oval | 26 May 2016 | Twenty20 | |
| 8 wickets | 48 | 109 | 12.0 | 20.0 | v Gloucs | Cardiff | 25 Jul 2014 | Twenty20 | |
| 6 wickets | 50 | 119 | 11.4 | 20.0 | v Kent | Cardiff | 6 Jul 2025 | Twenty20 |
Tied matches
Team 1 | Team 2 | Ground | Match Date | Scorecard |
| Glamorgan | Kent | Sophia Gardens, Cardiff | 13 Jun 2014 | Twenty20 |
| Glamorgan | Gloucs | Sophia Gardens, Cardiff | 1 Aug 2019 | Twenty20 |
Adjust:Most recentPast weekPast MonthPast year4 years10 years25 years
Records includes the following current or recent matches:
Somerset vs Lancashire at Birmingham, Vitality Blast Men 1st Semi Final, Sep 13, 2025 [Twenty20]
Northamptonshire vs Hampshire at Birmingham, Vitality Blast Men 2nd Semi Final, Sep 13, 2025 [Twenty20]
Hampshire vs Somerset at Birmingham, Vitality Blast Men Final, Sep 13, 2025 [Twenty20]