Former Springbok scrumhalf Neil de Kock scored a try as Saracens edged Newcastle 25-23 at Kingston Park.
Sarries, who led 10-6 at the break, scored three tries to record a win which takes them to third on the English Premiership log.
In other results, London Irish secured a 24-9 victory over London Welsh at Madejski Stadium in a game that saw both teams have a player red-carded, the Leicester Tigers fought back from 25-15 down at half-time to win 32-30 against the Sale Sharks in Salford, Bath claimed a 31-14 bonus-point win over the Exeter Chiefs at The Rec, and the Northampton Saints went back to the top of the log with a 30-25 win against Harlequins in front of 82,000 fans at Twickenham.
Round 11 results:
Sale 30 Leicester 32
Bath 31 Exeter 14
Newcastle 23 Saracens 25
Harlequins 25 Northampton 30
Gloucester vs Wasps