Leinster head coach Matt O'Connor admits his side's hopes of making the PRO12 play-offs are hanging by a thread after their loss at the Dragons.
The 25-22 defeat at Rodney Parade was all the more painful for the Irish province as they had held a 17-point lead at one stage in Sunday's game.
But then the Dragons roared back with late tries from Jack Dixon and James Benjamin (two) in a result that leaves Leinster eight points off fourth spot.
"Qualifying for the play-offs is now almost definitely out of our hands," O'Connor told PRO12rugby.com ahead of his side's trip to face Toulon this Sunday.
"We've got three games remaining and will try to get as many points as we can out of them but now we have to hope other teams do us a favour.
"We have to find a balance between the league and Europe but that's the dynamic at this time of the season and something we understand at Leinster. You have to make adjustments and can't make excuses.
"We were relatively pleased with the first 50 minutes and pretty much in control of the scoreboard. But then we made errors and lost big moments.
"The yellow card [to try-scorer Ben Te'o] was massive. We wanted players to put their hands up for selection. Some took their opportunity and others regressed."