Two tries from Jamie Elliott has kept Northampton in the hunt for a top four finish after a pulsating 25-23 win against Bath at Franklin's Gardens.
With 20 minutes to go, Northampton looked to be heading towards a routine home win at 20-9 in front, but young referee Luke Pearce sparked the game into life by awarding a controversial penalty try and when centre Semesa Rokoduguni followed up with an another, Bath led 23-20 with 10 minutes to go.
But England discard Ben Foden sent Elliott over for his second try with seven minutes left and Northampton clung on for a vital win.
Stephen Myler also kicked five penalties for Saints with Tom Heathcote booting the rest of Bath's points.
Fly-half Gareth Steenson booted 22 points and Exeter plundered five tries as they crushed London Welsh 47-16 to end a run of five Premiership matches without a win.
The home side opened a comfortable 19-9 lead at the break thanks to four penalties from Steenson and his conversion of the only try of the half, which came from hooker Jack Yeandle. Gavin Henson replied with three penalties, but the visitors were put to the sword in the second half.
Further tries from skipper Tommy Hayes, Damian Welch, Sireli Naqelevuki and Jack Nowell, all converted by Steenson, steered the Devon side to their deserved bonus-point victory.
Phil Mackenzie scored the try for the Exiles which was converted by Henson.