[2] Donald initially learnt to play cricket at Gorseinon CC,[3] where his brother Gafyn still turns out for the 1st XI.

Offered a new three-year contract from 2019 to 2021 by Glamorgan, Donald who has ambitions to play for the England national side, decided for career reasons on 23 August 2018 to sign a two-year deal with Hampshire for the 2019 and 2020 seasons.

As a result, Glamorgan offered Donald to Hampshire as a loan player for the remainder of the 2018 season, and he hence moved with immediate effect.

In December 2019, Donald was ruled out of the 2020 cricket season, after tearing his anterior cruciate ligament.

[8] At the conclusion of the 2023 season it was announced that Donald would join Derbyshire permanently at the end of his Hampshire contract in October 2023.