Women's International Twenty20 Batting and Fielding in Each Season by Laura Marsh
| Season | | Matches | Inns | Not Out | Runs | HS | Ave | 100 | 50 | Ct | St |
| 2007 | (England) | 2 | 1 | 0 | 1 | 1 | 1.00 | 0 | 0 | 0 | |
| 2007-08 | (Australia) | 1 | 1 | 0 | 7 | 7 | 7.00 | 0 | 0 | 0 | |
| 2008 | (England) | 3 | 3 | 2 | 9 | 4 | 9.00 | 0 | 0 | 0 | |
| 2009 | (England) | 6 | 2 | 0 | 2 | 2 | 1.00 | 0 | 0 | 1 | |
| 2009-10 | (India) | 3 | 3 | 1 | 54 | 46* | 27.00 | 0 | 0 | 0 | |
| 2009-10 | (West Indies) | 2 | 2 | 1 | 7 | 4 | 7.00 | 0 | 0 | 0 | |
| 2010 | (West Indies) | 3 | 3 | 0 | 42 | 33 | 14.00 | 0 | 0 | 1 | |
| 2010 | (England) | 3 | 3 | 0 | 33 | 18 | 11.00 | 0 | 0 | 0 | |
| 2010-11 | (Australia) | 5 | 5 | 0 | 121 | 45 | 24.20 | 0 | 0 | 1 | |
| 2010-11 | (Sri Lanka) | 2 | 2 | 0 | 59 | 30 | 29.50 | 0 | 0 | 0 | |
| 2011 | (England) | 4 | 4 | 0 | 63 | 28 | 15.75 | 0 | 0 | 0 | |
| 2011-12 | (New Zealand) | 4 | 4 | 0 | 74 | 48 | 18.50 | 0 | 0 | 1 | |
| 2011-12 | (South Africa) | 3 | 3 | 1 | 6 | 4* | 3.00 | 0 | 0 | 1 | |
| 2012 | (England) | 9 | 9 | 0 | 131 | 41 | 14.55 | 0 | 0 | 1 | |
| 2012-13 | (Sri Lanka) | 5 | 5 | 0 | 120 | 54 | 24.00 | 0 | 1 | 0 | |
| 2014-15 | (New Zealand) | 3 | 1 | 1 | 0 | 0* | | 0 | 0 | 0 | |
| 2015-16 | (India) | 2 | 0 | | | | | | | 0 | |
| 2018-19 | (India) | 2 | 0 | | | | | | | 0 | |
| 2018-19 | (Sri Lanka) | 3 | 0 | | | | | | | 0 | |
| 2019 | (England) | 2 | 2 | 1 | 26 | 25 | 26.00 | 0 | 0 | 1 | |