Archie McParland scored a dramatic late try as Prem leaders Northampton Saints came from behind to edge out Saracens at Tottenham Hotspur Stadium.
McParland and Tom Litchfield both went over early in the game as Saints raced into a 14-0 advantage, with Fin Smith converting both tries.
But Smith went off injured, with Sarries storming back to level through Tobias Elliott and Theo Dan – and Fergus Burke’s penalty put them in front for the first time.
However, Litchfield set up McParland to run in his second score with the clock ticking down, as Saints secured their sixth straight win and went six points clear at the summit.
Northampton started at a lively pace and seized the initiative immediately, with Henry Pollock – returning to the side after Six Nations duty – held up over the line following a weaving run by James Ramm.
But the visitors were soon ahead after a swift move that originated on halfway, with Ramm and Josh Kemeny involved before Rory Hutchinson released Litchfield, who bustled through to score under the posts.
Fly-half Smith, also back in the Saints line-up after England commitments, was influential in the early stages and charged through on the breakaway to set up McParland for a routine score before converting to make it 14-0.
Sarries struck back with their first significant attack of the game, working possession from left to right for Elliott to snap up a bouncing ball and hold off two defenders before diving across the line.
Northampton suffered another blow when Smith was forced off with a head injury on the half-hour mark, prompting a reshuffle, and they had to dig deep to survive a series of scrums close to their line.
With skipper Maro Itoje starting to exercise greater control after the turnaround, Saracens proved more adept at denying their opponents space and levelled when Dan broke from the back of a maul and bundled his way over.
Sarries looked the more likely winners for much of the second half, with Hugh Tizard close to giving them the advantage after a bout of ball-juggling on the Saints line.
Burke, taking over kicking duties after Owen Farrell’s departure, slotted a penalty to break the deadlock, and the Saracens defence held out when Saints replacement JJ van der Mesch burrowed into the corner, but was unable to ground the ball.
However, the league leaders kept going and gained their reward with just two minutes left when George Furbank combined with Litchfield and McParland sped in for the decisive score under the posts.