[2] Eight players completed the league and championship season while awaiting the outcome of the 2020 Donegal Senior Football Championship final (postponed following a case of COVID-19 at the Kilcar club); these were Patrick McBrearty, Ryan McHugh, Eoin McHugh and Andrew McClean, as well as the following from their opponents Naomh Conaill: Ciarán Thompson, Jeaic Mac Ceallabhuí, Eoghan McGettigan and Ethan O'Donnell.
[9] Jason McGee had hip surgery in Coventry, England, on 28 November 2019, causing him to miss the opening part of the season.
[10] Eamonn Doherty, Hugh McFadden and Odhrán McFadden-Ferry were all struck down by "January flu" as the season opened.
[2] The footballers travelled the round-trip of 900 kilometres to Tralee in their own cars to play Kerry in the first game, a feat described in the Irish Independent as the "most eye-catching example of GAA expeditions in the Covid era".
[20] Due to the impact of the COVID-19 pandemic on Gaelic games, the GAA announced that there would be no back-door route into the All-Ireland Championship.