Leicester won their ninth game in a row as they edged to a two point victory over champions Harlequins.
A trio of George Ford penalties to two from Marcus Smith gave Tigers a 9-6 lead after a cagey first half.
Harry Potter chased down Ben Youngs’ kick ahead to score the first try.
Quins’ Louis Lynagh cut the Tiger’s lead to 16-14. However, late Quins pressure amounted to nothing and Leicester maintained their perfect start to the season.