Dublin will move to Level 3 of the Government's five-level Living With Covid-19 plan at midnight tonight, with the restrictions to remain in place for the next three weeks.
The rest of the country will stay at Level 2, as measures are taken to tackle the recent surge of coronavirus cases in the capital.
So what does it mean from a sporting perspective?
Firstly, no outdoor matches can take place, though there is an exemption for professional, elite, inter-county and senior club championship action.
The Heineken Champions Cup, League of Ireland, horse racing and GAA inter-county and club championships [senior, junior and intermediate] can continue behind closed doors.
Leinster face Saracens in their European Cup quarter-final at the Aviva Stadium on Saturday, with Shelbourne hosting Finn Harps in the LOI Premier Division that night. On Sunday Ballyboden take on Cuala in the Dublin SHC 'A' final at Parnell Park. All of those games will go ahead, albeit without any fans present.
The Sky Blues' senior hurling and football squads can also continue to train fully. RTÉ Sport understands that the Dublin county board has been advised that their inter-county teams can travel outside the county for challenge matches.
Last week the GAA confirmed that the 2020 All-Ireland football and hurling championships will go ahead after receiving assurances of government financial support. This year's All-Ireland SFC begins on 31 October and will be a straight knockout competition. The hurling begins a week earlier and will feature a 'back door' qualifying system.
Meanwhile amateur teams in soccer and rugby are permitted to have non-contact training in pods of up to 15. The FAI have confirmed however that no grassroots games can take place and no Dublin-based teams can travel outside of the county to play or train.
For indoor sports, there will be individual training only and no exercise or dance classes. No matches or events are allowed to take place.
Gyms, leisure centres and swimming pools will be open - with protective measures in place - for individual training only.