First-Class Batting and Fielding Against Each Opponent by Iain O'Brien
| Opponent | Matches | Inns | Not Out | Runs | HS | Ave | 100 | 50 | Ct | St |
| Auckland | 9 | 12 | 3 | 47 | 11* | 5.22 | 0 | 0 | 1 | |
| Australia | 4 | 7 | 0 | 14 | 5 | 2.00 | 0 | 0 | 1 | |
| Bangladesh | 4 | 3 | 0 | 14 | 5 | 4.66 | 0 | 0 | 0 | |
| Canterbury | 10 | 12 | 5 | 140 | 44 | 20.00 | 0 | 0 | 2 | |
| Central Districts | 11 | 14 | 5 | 58 | 18* | 6.44 | 0 | 0 | 3 | |
| Derbyshire | 2 | 3 | 1 | 5 | 5 | 2.50 | 0 | 0 | 0 | |
| England | 2 | 4 | 0 | 15 | 6 | 3.75 | 0 | 0 | 0 | |
| England Lions | 1 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | |
| England XI | 1 | 1 | 1 | 4 | 4* | | 0 | 0 | 0 | |
| Essex | 2 | 3 | 1 | 44 | 31* | 22.00 | 0 | 0 | 0 | |
| Glamorgan | 2 | 3 | 0 | 41 | 28 | 13.66 | 0 | 0 | 0 | |
| Gloucestershire | 2 | 4 | 0 | 56 | 31 | 14.00 | 0 | 0 | 2 | |
| India | 3 | 5 | 2 | 61 | 19* | 20.33 | 0 | 0 | 1 | |
| India A | 1 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 1 | |
| Kent | 2 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | |
| Leicestershire | 1 | 0 | | | | | | | 0 | |
| Middlesex | 2 | 2 | 0 | 22 | 20 | 11.00 | 0 | 0 | 0 | |
| New South Wales | 1 | 2 | 0 | 16 | 14 | 8.00 | 0 | 0 | 0 | |
| Northern Districts | 6 | 5 | 0 | 13 | 5 | 2.60 | 0 | 0 | 0 | |
| Otago | 8 | 7 | 3 | 43 | 18 | 10.75 | 0 | 0 | 0 | |
| Pakistan | 3 | 5 | 1 | 67 | 31 | 16.75 | 0 | 0 | 1 | |
| Pakistanis | 1 | 0 | | | | | | | 0 | |
| South Africa | 2 | 4 | 1 | 14 | 14* | 4.66 | 0 | 0 | 0 | |
| South Africa A | 1 | 2 | 0 | 6 | 6 | 3.00 | 0 | 0 | 0 | |
| Sri Lanka | 2 | 4 | 0 | 30 | 12 | 7.50 | 0 | 0 | 3 | |
| Sri Lanka A | 2 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 1 | |
| Sri Lanka Cricket XI | 1 | 1 | 1 | 18 | 18* | | 0 | 0 | 0 | |
| Sussex | 2 | 2 | 1 | 14 | 14* | 14.00 | 0 | 0 | 0 | |
| West Indies | 2 | 2 | 1 | 4 | 4 | 4.00 | 0 | 0 | 1 | |
| Worcestershire | 1 | 2 | 0 | 10 | 5 | 5.00 | 0 | 0 | 0 | |