List A Batting and Fielding in Each Season by Kevin O'Brien
| Season | | Matches | Inns | Not Out | Runs | HS | Ave | 100 | 50 | Ct | St |
| 2006 | (United Arab Emirates) | 3 | 3 | 0 | 45 | 36 | 15.00 | 0 | 0 | 0 | |
| 2006 | (Ireland) | 3 | 3 | 0 | 74 | 35 | 24.66 | 0 | 0 | 2 | |
| 2006 | (Scotland) | 1 | 1 | 0 | 24 | 24 | 24.00 | 0 | 0 | 0 | |
| 2006-07 | (Kenya) | 5 | 5 | 0 | 264 | 142 | 52.80 | 1 | 2 | 3 | |
| 2006-07 | (West Indies) | 8 | 8 | 1 | 170 | 49 | 24.28 | 0 | 0 | 1 | |
| 2007 | (Ireland) | 9 | 9 | 0 | 166 | 37 | 18.44 | 0 | 0 | 4 | |
| 2007 | (England) | 2 | 2 | 0 | 39 | 33 | 19.50 | 0 | 0 | 1 | |
| 2007-08 | (Bangladesh) | 3 | 3 | 0 | 59 | 21 | 19.66 | 0 | 0 | 1 | |
| 2008 | (England) | 3 | 3 | 1 | 97 | 93* | 48.50 | 0 | 1 | 3 | |
| 2008 | (Ireland) | 6 | 5 | 2 | 43 | 23* | 14.33 | 0 | 0 | 3 | |
| 2008-09 | (Kenya) | 2 | 2 | 0 | 121 | 83 | 60.50 | 0 | 1 | 2 | |
| 2008-09 | (South Africa) | 10 | 7 | 5 | 295 | 101* | 147.50 | 1 | 2 | 5 | |
| 2009 | (Scotland) | 1 | 1 | 0 | 1 | 1 | 1.00 | 0 | 0 | 1 | |
| 2009 | (England) | 12 | 11 | 2 | 276 | 94 | 30.66 | 0 | 2 | 3 | |
| 2009 | (Ireland) | 6 | 5 | 0 | 54 | 22 | 10.80 | 0 | 0 | 3 | |
| 2009-10 | (West Indies) | 2 | 2 | 0 | 80 | 54 | 40.00 | 0 | 1 | 0 | |
| 2010 | (Netherlands) | 6 | 6 | 3 | 226 | 98* | 75.33 | 0 | 1 | 4 | |
| 2010 | (Canada) | 2 | 2 | 0 | 10 | 7 | 5.00 | 0 | 0 | 0 | |
| 2010 | (Ireland) | 7 | 6 | 1 | 97 | 37 | 19.40 | 0 | 0 | 2 | |
| 2010-11 | (Bangladesh) | 1 | 1 | 0 | 37 | 37 | 37.00 | 0 | 0 | 0 | |
| 2010-11 | (India) | 5 | 5 | 1 | 161 | 113 | 40.25 | 1 | 0 | 3 | |
| 2010-11 | (Zimbabwe) | 3 | 3 | 1 | 109 | 73* | 54.50 | 0 | 1 | 0 | |
| 2011 | (England) | 8 | 8 | 2 | 170 | 46 | 28.33 | 0 | 0 | 3 | |
| 2011 | (Ireland) | 7 | 6 | 0 | 131 | 43 | 21.83 | 0 | 0 | 7 | |
| 2011 | (Scotland) | 1 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | |
| 2011-12 | (Kenya) | 2 | 2 | 0 | 58 | 39 | 29.00 | 0 | 0 | 0 | |
| 2012 | (Ireland) | 5 | 3 | 0 | 39 | 31 | 13.00 | 0 | 0 | 1 | |
| 2012-13 | (United Arab Emirates) | 2 | 2 | 1 | 43 | 25* | 43.00 | 0 | 0 | 1 | |
| 2013 | (Ireland) | 5 | 4 | 1 | 148 | 84* | 49.33 | 0 | 1 | 4 | |
| 2013 | (Netherlands) | 2 | 2 | 0 | 36 | 32 | 18.00 | 0 | 0 | 1 | |
| 2013-14 | (West Indies) | 4 | 4 | 0 | 79 | 39 | 19.75 | 0 | 0 | 1 | |
| 2014 | (Ireland) | 4 | 4 | 1 | 159 | 67 | 53.00 | 0 | 2 | 2 | |
| 2014-15 | (United Arab Emirates) | 5 | 4 | 1 | 86 | 30 | 28.66 | 0 | 0 | 3 | |
| 2014-15 | (Australia) | 4 | 4 | 0 | 130 | 50 | 32.50 | 0 | 1 | 2 | |
| 2014-15 | (New Zealand) | 2 | 2 | 0 | 1 | 1 | 0.50 | 0 | 0 | 1 | |
| 2015 | (Ireland) | 1 | 0 | | | | | | | 0 | |
| 2015-16 | (Zimbabwe) | 3 | 3 | 0 | 31 | 16 | 10.33 | 0 | 0 | 1 | |
| 2016 | (Ireland) | 7 | 7 | 0 | 225 | 75 | 32.14 | 0 | 2 | 2 | |
| 2016 | (England) | 6 | 4 | 0 | 203 | 89 | 50.75 | 0 | 2 | 0 | |
| 2016-17 | (United Arab Emirates) | 2 | 1 | 0 | 69 | 69 | 69.00 | 0 | 1 | 2 | |
| 2016-17 | (India) | 2 | 2 | 1 | 85 | 72* | 85.00 | 0 | 1 | 0 | |
| 2016-17 | (South Africa) | 2 | 2 | 0 | 64 | 41 | 32.00 | 0 | 0 | 0 | |
| 2017 | (England) | 2 | 2 | 0 | 22 | 18 | 11.00 | 0 | 0 | 2 | |
| 2017 | (Ireland) | 7 | 6 | 1 | 177 | 75 | 35.40 | 0 | 2 | 1 | |
| 2017-18 | (Zimbabwe) | 7 | 7 | 1 | 198 | 50* | 33.00 | 0 | 1 | 0 | |
| 2017-18 | (United Arab Emirates) | 7 | 7 | 2 | 116 | 46 | 23.20 | 0 | 0 | 3 | |
| 2018 | (Ireland) | 6 | 5 | 0 | 55 | 22 | 11.00 | 0 | 0 | 2 | |
| 2018-19 | (India) | 5 | 4 | 1 | 90 | 33* | 30.00 | 0 | 0 | 2 | |
| 2019 | (Spain) | 1 | 1 | 1 | 49 | 49* | | 0 | 0 | 1 | |
| 2019 | (Ireland) | 11 | 11 | 2 | 238 | 68 | 26.44 | 0 | 2 | 6 | |
| 2019-20 | (West Indies) | 4 | 4 | 0 | 99 | 43 | 24.75 | 0 | 0 | 1 | |
| 2020 | (England) | 3 | 3 | 1 | 46 | 22 | 23.00 | 0 | 0 | 0 | |
| 2020 | (Ireland) | 4 | 4 | 0 | 106 | 51 | 26.50 | 0 | 1 | 1 | |
| 2020-21 | (United Arab Emirates) | 4 | 4 | 0 | 27 | 23 | 6.75 | 0 | 0 | 3 | |
| 2021 | (Ireland) | 6 | 6 | 1 | 128 | 39 | 25.60 | 0 | 0 | 6 | |
| 2021 | (Netherlands) | 1 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | |
| 2022 | (Ireland) | 5 | 5 | 1 | 133 | 66 | 33.25 | 0 | 1 | 3 | |