Fin Smith's last-second penalty snatched a breathless 41-38 victory for Prem Rugby leaders Northampton Saints against second-placed Bath at Franklin's Gardens.
A last-minute try by England fly-half Fin Smith saw Northampton Saints snatch a thrilling 35-28 victory over Exeter Chiefs at Sandy Park on Saturday afternoon.
Northampton were denied a Champions Cup semi-final spot for the third successive season after Bath won 43-41 following a late yellow card for England star Henry Pollock.
Northampton returned to the top of the Gallagher Prem table despite a disjointed display in a narrow 28-27 victory over battling bottom side Newcastle.
Henry Pollock has admitted to Sky Sports that "if I was a fan I'd boo me" but has ambitions to move into a "leadership role" with England within the next two years.
Harlequins defied their abysmal domestic form to stun La Rochelle 27-17 at Stade Marcel Deflandre and secure home advantage in the Champions Cup round of 16.
Northampton Saints were brought back down to earth after they suffered a 50-28 loss away to Champions Cup holders Bordeaux in a repeat of last season's final.
Bath lost a 26-point lead in an epic south-west derby only to snatch back victory in the most dramatic fashion in the closing seconds to beat Exeter 33-26, before Northampton Saints returned to the top of the Prem table.