Twenty20 Blast Bowling Against Each Opponent by Kevin O'Brien
| Opponent | Balls | Mdns | Runs | Wkts | BB | Ave | 4wI | 5wI | SRate | Econ |
| Derbyshire | 48 | 0 | 75 | 2 | 1-27 | 37.50 | 0 | 0 | 24.00 | 9.37 |
| Durham | 66 | 0 | 71 | 6 | 2-14 | 11.83 | 0 | 0 | 11.00 | 6.45 |
| Essex | 60 | 0 | 109 | 3 | 2-32 | 36.33 | 0 | 0 | 20.00 | 10.90 |
| Glamorgan | 6 | 0 | 8 | 0 | | | | | | 8.00 |
| Gloucestershire | 6 | 0 | 15 | 0 | | | | | | 15.00 |
| Hampshire | 12 | 0 | 15 | 0 | | | | | | 7.50 |
| Kent | 24 | 0 | 39 | 0 | | | | | | 9.75 |
| Lancashire | 18 | 0 | 31 | 1 | 1-11 | 31.00 | 0 | 0 | 18.00 | 10.33 |
| Middlesex | 24 | 0 | 18 | 1 | 1-18 | 18.00 | 0 | 0 | 24.00 | 4.50 |
| Northamptonshire | 66 | 0 | 80 | 1 | 1-15 | 80.00 | 0 | 0 | 66.00 | 7.27 |
| Somerset | 42 | 0 | 64 | 1 | 1-25 | 64.00 | 0 | 0 | 42.00 | 9.14 |
| Surrey | 17 | 0 | 21 | 1 | 1-21 | 21.00 | 0 | 0 | 17.00 | 7.41 |
| Sussex | 36 | 0 | 40 | 2 | 2-22 | 20.00 | 0 | 0 | 18.00 | 6.66 |
| Warwickshire | 21 | 0 | 31 | 1 | 1-31 | 31.00 | 0 | 0 | 21.00 | 8.85 |
| Worcestershire | 24 | 0 | 29 | 0 | | | | | | 7.25 |
| Yorkshire | 48 | 0 | 54 | 4 | 3-27 | 13.50 | 0 | 0 | 12.00 | 6.75 |