Leeds coach Brian McDermott admits he is concerned over his side's dip in form after they missed the chance to return to the top of the First Utility Super League.
A 24-22 loss at home to Huddersfield was a third defeat in their last four matches and, although they would have stopped the rot had winger Tom Briscoe been awarded a last-minute try, McDermott admitted his side's performance was not good enough.
"Even watching it live I thought it would be a big one to give," McDermott said of video referee Phil Bentham's decision to disallow the try for a push by Briscoe on Giants captain Danny Brough.
"It would have been a fairytale finish I suppose but I still wouldn't have been content.
"Our performances have dropped right off, although we made some improvements there, I thought our attitude to hard work tonight has been a lot better than it has been for the last two weeks.
"We still had some defensive lapses, some moments where we switched off and that cost us the game."
Leeds led 12-6 at half-time thanks to tries from Kallum Watkins and Ben Jones-Bishop but the visitors stormed into a 24-12 lead with three tries in an ultimately-decisive 10-minute spell.
"I thought it was a great first 40 minutes," McDermott added. "Both teams had a crack. We just didn't live with Huddersfield's intensity early in the second half and that's where the game was lost.
"It was good that we came back and fashioned some tries and got back into the game and made it really close at the end but we're monitoring just how much we've dropped off recently."
The Giants scored tries through Kyle Wood, Eorl Crabtree, Joe Wardle and Jermaine McGillvary as they extended their unbeaten run against Leeds to seven matches with a fourth successive triumph at Headingley.
"It's always good to come to Headingley and get a win," said Huddersfield assistant coach Kieron Purtill.
"We probably didn't play smart at times. Bot teams had chances to take the game away from each other but from an outside point of view, it was a great spectacle and a great way to finish."
The Giants have now put their disappointing start to the season behind them with seven wins from their last eight games but Purtill insists they will need to find yet more improvement if they are to retain their league leaders shield.
"Our completion needs to be better than that," he said. "When we did hold the ball we caused Leeds problems. We just didn't hold it for long enough.
"The pleasing thing is that there was effort there for 80 minutes."