List A Batting and Fielding in Each Season by Sammu Ashan
| Season | | Matches | Inns | Not Out | Runs | HS | Ave | 100 | 50 | Ct | St |
| 2016-17 | (Sri Lanka) | 10 | 10 | 0 | 204 | 55 | 20.40 | 0 | 2 | 1 | |
| 2017-18 | (Sri Lanka) | 2 | 1 | 0 | 8 | 8 | 8.00 | 0 | 0 | 1 | |
| 2018 | (Bangladesh) | 3 | 3 | 0 | 53 | 28 | 17.66 | 0 | 0 | 1 | |
| 2018 | (Sri Lanka) | 7 | 7 | 3 | 225 | 72 | 56.25 | 0 | 2 | 3 | |
| 2018-19 | (Sri Lanka) | 15 | 12 | 2 | 215 | 57* | 21.50 | 0 | 1 | 7 | |
| 2019-20 | (Bangladesh) | 2 | 2 | 0 | 16 | 15 | 8.00 | 0 | 0 | 0 | |
| 2019-20 | (Sri Lanka) | 6 | 5 | 1 | 198 | 71* | 49.50 | 0 | 1 | 2 | |
| 2020-21 | (Sri Lanka) | 7 | 7 | 2 | 291 | 107* | 58.20 | 2 | 1 | 1 | |
| 2021-22 | (Sri Lanka) | 9 | 8 | 1 | 228 | 84* | 32.57 | 0 | 2 | 2 | |
| 2022 | (Sri Lanka) | 12 | 12 | 2 | 312 | 112* | 31.20 | 1 | 2 | 5 | |
| 2023-24 | (Sri Lanka) | 5 | 3 | 0 | 23 | 11 | 7.66 | 0 | 0 | 3 | |
| 2024 | (Sri Lanka) | 9 | 9 | 4 | 349 | 97* | 69.80 | 0 | 2 | 1 | |
| 2024-25 | (Sri Lanka) | 3 | 3 | 1 | 35 | 28 | 17.50 | 0 | 0 | 0 | |