In Barnet, Northampton Saints ran in seven tries to beat Saracens 49-34.
Captain Callum Chick scored the first try after just four minutes, and went on to complete a first-half hat-trick as Saints led 28-22 at half-time.
Max Malins scored on his return to Saracens after a summer move from Bristol, and 19-year-old winger Jack Bracken scored two second-half tries.
But Saints always had their noses in front and sealed victory with two tries from full-back James Ramm.
