Two second-half tries by former Bok scrumhalf Michael Claassens helped Bath beat Northampton 25-14 and regain pole position on the English Premiership log.
The Saints led 13-9 at the break, but Claassens crossed after 54 and 75 minutes with Butch James converting one of the two tries. Former Blue Bulls lock Juandre Kruger scored a consolation try for Northampton in the final minute to give the scoreline some respectability.
Meanwhile, Saracens shocked London Irish 16-13 at Vicarge Road. Irish went into the game as the Premiership log leaders, but a poor goal kicking display from former Waratahs fullback Peter Hewat (who was successful with three from six attempts) and a committed effort from Saracens, ended their 10-match unbeaten run in all competitions.
At Twickenham, a last-minute conversion by ex-All Blacks flyhalf Nick Evans gave Harlequins a 26-all draw against Leicester in front of a record regular-season Premiership crowd of 50 000. Heyneke Meyer’s Tigers seemed to have the match wrapped up when they led 23-9 in the second half, but two tries, including a late one from Ugo Monye, allowed Quins to come away with two log points.