Harlequins director of rugby Conor O'Shea refused to blame the kicking struggles of Nick Evans for the loss to Northampton.
In an early-season clash between two teams expected to contend for the title, Northampton squeezed out the hosts thanks to a second-half try from James Wilson.
Evans missed several shots at goal in nightmarish conditions at The Stoop, but O'Shea backed the former All Black to come good having already won several tight matches for the club in the past.
"We move on and forget it, Nick wins so many games for this club. You get the bounce of the ball one day, you don't the next," said O'Shea.
"We brought Ben Botica on and he hit the posts. It's not a train smash.
"It's really disappointing because I thought we played some really good rugby in horrific conditions but didn't get the reward.
"I said to the boys even before the game, this doesn't define your season. If we play like that week in week out we'll be fine, we just have to take our chances and we had enough.
"That happens and Northampton will be really pleased with the win, as they should be. We'll get ourselves ready for Worcester next week."