Exeter 31-17 Harlequins
Reigning champions Exeter moved to the top of the Aviva Premiership despite the unconvincing manner of their 31-17 win over injury-hit Harlequins at Sandy Park.
Their bonus-point success moved them two points ahead of Saracens, who they meet at Allianz Park next Sunday.
Harlequins, inspired by the skill of young fly-half Marcus Smith, were the better side for large parts of the game but a number of marginal refereeing decisions went against them.
Jonny Hill scored two of Exeter's tries, with one each for Olly Woodburn and Lachie Turner, while Gareth Steenson converted all four and kicked a penalty.