First-Class Batting and Fielding Against Each Opponent by Francis O'Brien
| Opponent | Matches | Inns | Not Out | Runs | HS | Ave | 100 | 50 | Ct | St |
| Auckland | 4 | 7 | 0 | 234 | 86 | 33.42 | 0 | 2 | 3 | |
| Australians | 2 | 4 | 0 | 22 | 12 | 5.50 | 0 | 0 | 0 | |
| Cambridge University | 2 | 2 | 1 | 68 | 53* | 68.00 | 0 | 1 | 1 | |
| Derbyshire | 2 | 4 | 0 | 80 | 31 | 20.00 | 0 | 0 | 0 | |
| Essex | 4 | 8 | 1 | 142 | 41* | 20.28 | 0 | 0 | 2 | |
| Glamorgan | 4 | 8 | 0 | 227 | 90 | 28.37 | 0 | 1 | 6 | |
| Hampshire | 4 | 8 | 0 | 155 | 60 | 19.37 | 0 | 1 | 3 | |
| Lancashire | 2 | 3 | 0 | 103 | 51 | 34.33 | 0 | 1 | 1 | |
| Leicestershire | 3 | 3 | 0 | 30 | 19 | 10.00 | 0 | 0 | 2 | |
| Marylebone Cricket Club | 2 | 3 | 0 | 30 | 19 | 10.00 | 0 | 0 | 2 | |
| Middlesex | 1 | 1 | 0 | 15 | 15 | 15.00 | 0 | 0 | 0 | |
| New Zealand Services | 1 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | |
| North Island | 1 | 1 | 0 | 7 | 7 | 7.00 | 0 | 0 | 0 | |
| Otago | 10 | 16 | 0 | 788 | 164 | 49.25 | 4 | 2 | 5 | |
| Somerset | 3 | 6 | 0 | 54 | 21 | 9.00 | 0 | 0 | 1 | |
| Sussex | 4 | 8 | 1 | 140 | 44 | 20.00 | 0 | 0 | 0 | |
| Warwickshire | 2 | 3 | 0 | 87 | 48 | 29.00 | 0 | 0 | 0 | |
| Wellington | 7 | 12 | 2 | 270 | 81 | 27.00 | 0 | 2 | 4 | |
| West Indians | 1 | 2 | 0 | 33 | 19 | 16.50 | 0 | 0 | 0 | |
| Worcestershire | 3 | 6 | 0 | 43 | 26 | 7.16 | 0 | 0 | 3 | |
| Yorkshire | 4 | 7 | 0 | 121 | 36 | 17.28 | 0 | 0 | 1 | |