Bristol Bears sealed a Premiership play-off place with a 36-7 drubbing of London Irish but Bath face an anxious wait to discover if they will feature in the semi-finals following a draw with Saracens.
The postponement of Sale Sharks' clash with Worcester Warriors until Wednesday due to "a number" of positive coronavirus at the Lancashire club meant the play-off picture could not be finalised on Sunday.
Bristol started the last round of fixtures outside the top four, but a demolition of the Exiles ensured they remain in the hunt for the title.
Semi Radradra, Ben Earl, Harry Thacker and Will Capon crossed, while Bristol were also awarded a penalty try as they moved above Bath into third place.
Bath's season will be over if Sale beat Worcester in midweek, although whether the game goes ahead depends on the results of COVID-19 testing, after relegated Saracens came back from 14 points down in the second half to draw 17-17 at Allianz Park.
Bath looked set to seal a place in the last four when Rhys Priestland put them 17-3 up early in the second half, following on tries from Beno Obano and former Sarries scrum-half Ben Spencer.
The defending champions stormed back in their last game in the top flight, a penalty try and Tim Swinson's score - both converted by Manu Vunipola - rocking Bath.
Wasps sealed second place, and a home semi-final, with a 46-5 rout of Exeter Chiefs - already assured of top spot - and Harlequins beat Leicester Tigers 32-26 in Chris Robshaw's farewell match.
Gloucester were awarded a 20-0 bonus-point win over Northampton Saints, who had insufficient front-rowers to start the match with a number of their players self-isolating after playing against Sale.