Bath took a massive step towards a semi-final place with a 15-14 victory over Newcastle at Kingston Park.
Bath rallied from 14-0 down at half-time thanks to a try from Michael Classsens, a converted five pointer from Shontayne Hape and a Ryan Davis penalty.
The narrow win now leaves them in third, joint on points with the second placed Harlequins and London Irish in fourth.
Victory over Saracens in their final league game at The Rec will secure a semi-final. They could still finish second should Quins lose to Newcastle, but defeat could see them miss the play-offs altogether should Sale beat Northampton with a bonus-point.
In other matches on Sunday, Leicester virtually assured themselves a home play-off with a 16-13 victory over Saracens at Vicarage Road. With one round remaining in the league phase the Tigers are five points clear of Quins and need just one point from their match against bottom placed Bristol next week to host a semi-final.
Earlier on Sunday, Bristol were hammered 36-18 by Wasps at the Memorial Stadium.