Participating teams and match officials have overcome unprecedented travel problems to ensure that games go ahead as scheduled, despite fixtures taking place in three countries.
With a game on Friday evening, Ulster were the first team to be affected, having to make their way to Glasgow by ferry as their planned flight out of Belfast was cancelled on Thursday.
In tonight's other game Ospreys, having stayed in Ireland following their match against Ulster on Tuesday, made their way by coach to Dublin yesterday ready to face Leinster.
With Cardiff Blues and Munster both travelling within their own countries to Scarlets and Connacht repectiely, it is only left for Edinburgh to make their way to Wales to face Newport Gwent Dragons in Sunday's fixture. Should the air travel problems continue the team has contingency plans in place.
Changes also had to be made to the match officials with the SRU's Peter Allan now taking charge of Glasgow Warriors v Ulster, Alan Lewis of the IRFU officiating at Leinster v Ospreys, and James Jones of WRU a late replacement for Newport Gwent Dragons v Edinburgh
And don't forget that if your own travel plans are disrupted, you can keep up to date with via Matchday live on the Magners League website.
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