Leicester maintain their winning start
Leicester Tigers made it two wins from two in the Premiership when they came from behind to defeat Harlequins 22-19 in front of 17,510 at Welford Road.
Saracens are the only other side to win both of their opening games.
Leicester trailed 13-12 at the break, with Tommy Bell kicking four penalties.
Laurence Pearce got their only try, with 17-year old scrum-half Ben White, the youngest player to feature for the Tigers in the Premiership, impressing off the bench.
Leicester will bid to maintain their winning start when they host Wasps on Sunday.
Treviso are bottom of the Pro12 after their fifth loss in five - 19-12 away to Harlequins - with Zebre's surprise win over Edinburgh lifting them off the basement.
Treviso host Leinster on Sunday when they will hope to finally pick up their first win of the campaign.
French champions Stade Francais are third from bottom in the Top 14 after losing 27-18 in the Paris derby at Racing 92.
They trailed 13-10 at the break with a try from Sekou Macalou keeping them in touch. But the game was well gone from them when Clement Daguin got their second try in the dying moments.
They have just eight points after six games and this weekend are away to bottom side Agen who have only four points so far.
The reigning champions are now 15 points adrift of leaders Clermont Auvergne with almost a quarter of the campaign played.
They need to start picking up points urgently if they are to make a meaningful defence of their title but will be expected to beat Agen.