The PRO14 has been suspended indefinitely after tournament organisers met via conference call and decided on drastic measures due to the continued coronavirus crisis.
With no clarity on when the league could be resumed, the board decided that they had no other option but to impose an indefinite suspension.
The final, which was due to take place in Cardiff on June 20, has also been cancelled. Should the PRO14 be allowed to resume, the decider will be hosted by the team with highest ranking based upon league records from this campaign.
It looks increasingly unlikely that will be the case, however, as the remainder of the 2019/20 rugby season looks destined to be scrapped.
Meanwhile, the IRFU has announced that the 2019/20 domestic season has been cancelled with immediate effect.
The directive applies to all incomplete national and provincial competitions.
The cancellation means that there will be no promotion or relegation in any of the five divisions of the Men's All-Ireland League, but the planned expansion of the Women's AIL for the 2020/21 season remains in place.
There will be no league or cup winners in any competition organised at a national level, including the All-Ireland Leagues, Women's All-Ireland Cup and the Bateman Cup.