ODI Bowling Against Each Opponent by Kevin O'Brien
| Opponent | Balls | Mdns | Runs | Wkts | BB | Ave | 4wI | 5wI | SRate | Econ |
| Afghanistan | 712 | 5 | 556 | 25 | 4-26 | 22.24 | 2 | 0 | 28.48 | 4.68 |
| Australia | 102 | 1 | 73 | 3 | 3-43 | 24.33 | 0 | 0 | 34.00 | 4.29 |
| Bangladesh | 253 | 0 | 223 | 5 | 2-58 | 44.60 | 0 | 0 | 50.60 | 5.28 |
| Bermuda | 48 | 1 | 38 | 2 | 2-38 | 19.00 | 0 | 0 | 24.00 | 4.75 |
| Canada | 222 | 3 | 157 | 7 | 2-21 | 22.42 | 0 | 0 | 31.71 | 4.24 |
| England | 228 | 1 | 234 | 2 | 1-26 | 117.00 | 0 | 0 | 114.00 | 6.15 |
| India | 71 | 0 | 70 | 0 | | | | | | 5.91 |
| Kenya | 150 | 1 | 121 | 3 | 1-13 | 40.33 | 0 | 0 | 50.00 | 4.84 |
| Netherlands | 384 | 7 | 269 | 17 | 4-13 | 15.82 | 1 | 0 | 22.58 | 4.20 |
| New Zealand | 72 | 0 | 66 | 1 | 1-46 | 66.00 | 0 | 0 | 72.00 | 5.50 |
| Pakistan | 276 | 0 | 262 | 5 | 2-43 | 52.40 | 0 | 0 | 55.20 | 5.69 |
| Papua New Guinea | 42 | 0 | 53 | 2 | 2-53 | 26.50 | 0 | 0 | 21.00 | 7.57 |
| Scotland | 608 | 5 | 481 | 10 | 3-31 | 48.10 | 0 | 0 | 60.80 | 4.74 |
| South Africa | 114 | 0 | 176 | 3 | 2-66 | 58.66 | 0 | 0 | 38.00 | 9.26 |
| Sri Lanka | 126 | 0 | 141 | 2 | 1-10 | 70.50 | 0 | 0 | 63.00 | 6.71 |
| United Arab Emirates | 204 | 2 | 168 | 9 | 4-41 | 18.66 | 1 | 0 | 22.66 | 4.94 |
| West Indies | 228 | 0 | 266 | 5 | 4-71 | 53.20 | 1 | 0 | 45.60 | 7.00 |
| Zimbabwe | 456 | 4 | 373 | 13 | 3-27 | 28.69 | 0 | 0 | 35.07 | 4.90 |