Teams Mattie McKiernan played for
| Main FC | Derbyshire (2019-2022) |
| Main ListA | Derbyshire (2021-2023) |
| Main Twenty20 | Derbyshire (2018-2023) |
| Minor Counties Championship | Cumberland (2016-2017) |
| Minor Counties Trophy | Cumberland (2016-2017) |
| Minor Counties Twenty20 | Cumberland (2018) |
| Second Eleven Championship | Lancashire Second XI (2013-2017) |
| Leicestershire Second XI (2016-2017) | |
| Hampshire Second XI (2018) | |
| Derbyshire Second XI (2018-2023) | |
| Warwickshire Second XI (2018) | |
| Second Eleven Trophy | Northamptonshire Second XI (2012) |
| Lancashire Second XI (2013-2017) | |
| Unicorns (2016-2017) | |
| Durham Second XI (2017) | |
| Hampshire Second XI (2018) | |
| Second Eleven Twenty20 | Lancashire Second XI (2013-2017) |
| Unicorns (2016-2018) | |
| Derbyshire Second XI (2018-2023) | |
| Liverpool Premier League | Leigh (2011-2025) |
| North Yorkshire and South Durham Premier League | Richmondshire (2018) |
| Northern Premier League | Lancashire Academy (2010-2012) |
| Garstang (2021) | |
| Under-14 County Cup | Lancashire Under-14s (2007-2008) |
| Under-15 County Cup | Lancashire Under-15s (2009) |
| Under-17 County Cup | Lancashire Under-17s (2010-2011) |
| Under-17 County Championship | Lancashire Under-17s (2010-2011) |
| Twenty20 Blast | Derbyshire (2018-2023) |
| County Championship | Derbyshire (2019-2022) |
| Miscellaneous | Lancashire Under-13s (2006-2007) |
| Leigh (2008-2025) | |
| English Schools Cricket Association North Under-15s (2008-2009) | |
| Lancashire Under-15s (2008-2009) | |
| Lancashire Second XI (2010-2014) | |
| Liverpool and District Cricket Competition Under-21s (2010) | |
| Lancashire Academy (2011) | |
| Tom Maynard Academy (2013/14) | |
| Durham Second XI (2015) | |
| Northumberland (2015) | |
| Unicorns (2016-2017) | |
| Leicestershire Second XI (2017) | |
| Leicestershire (2017) | |
| Hampshire Second XI (2017-2018) | |
| Hampshire (2018) | |
| Richmondshire (2018) | |
| Derbyshire XI (2018) | |
| Derbyshire Second XI (2018-2021) | |
| Warwickshire Second XI (2018) | |
| Derbyshire (2019/20-2023) |
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