Sale continued their assault on the Aviva Premiership top four as they demolished a Northampton Saints side littered with returning international superstars.
The stunning 19-6 win over the then Aviva Premiership leaders saw the Sharks climb to fifth in the table � leapfrogging Harlequins � and they are now just seven points outside the top four with five rounds left to go.
However Diamond is not about to get carried away, despite admitting that the victory over Northampton shows just how far his troops have come this campaign.
"This was definitely the biggest win of the season. We had seen this type of victory coming as we have played well against the top sides but hadn�t managed a victory," he said.
"If we get into the top four it's anybody's competition. It's probably a little bit too far for us at the moment so we are focusing on getting into the top European competition, whatever it may be.
"We have been doing well all year and just haven't cracked a top-four side so we are just continuing to go in the same direction that we have been for the past 15 months.
"We are confident of putting in a good display at Bath and we will see where that takes us.
"We don't have a target for the end of the season we just take every game as it comes.
"If we do finish in the European places I am really excited to play in the new European competition. The players want to play in it and the coaches want to coach in it, it is always good to be in the top competitions.
"The European competition will help the club, as for the last years 20 years pretty much ten of those years Sale have been in the Heineken Cup."
Sale could take another step closer to an Aviva Premiership place this Friday evening as they clash with third-place Bath Rugby.
George Ford kicked Bath to victory over London Irish this weekend and Diamond admits the England fly-half will be occupying his thoughts at the Rec.
"I think we have found a good balance in the pack, the pack doesn't change much maybe one or two personnel changes, but we just hope that players stay fit," Diamond added.
"Against Bath we will definitely have to look after George Ford who is a very good player and their forward pack is very big. We need to get parity in the forwards as well as look after their key man George Ford to come away with something.
"Our senior players will be very important; the captain and senior guys are integral to our success."
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- Aviva Premiership