London Irish head coach Toby Booth believes his side's victory over Wasps could define their season.
The Exiles ended a run of four matches without a win by winning 21-17 in a close encounter on Sunday.
"It certainly wasn't a vintage display but it was a very important one," Booth told BBC Berkshire.
"It may not have been easy on the eye but it could be a defining performance because we've tipped the scale from being competitive to winning."
He added: "It's proof that we are capable of winning ugly, which I think some people had doubted previously.
"We needed that result, so from our point of view it's a good reflection of our hardwork and keeps us where we want to be."