HULL KR winger Craig Hall says Rovers can't afford to waste time feeling sorry for themselves after losing the 219th derby in controversial circumstances.
Leading 16-6 with eight minutes to go, Hull struck three times to break Rovers hearts.
Cruelly, Chris Green's match-winning try in the 78th minute should not have been awarded, with the RFL even apologising for video-referee Steve Ganson's error.
Hall admits the manner of defeat was tough to take, but he insists he and his team-mates cannot afford to wallow in self pity.
"We can't feel sorry for ourselves this week," Hall told the Mail. "We can't dwell on this.
"We are out of the top eight now so we need to dust ourselves off and regroup. If we put that effort in every week until the end of the season we'll be okay.
"The effort has always been there, but we have been guilty of giving away daft penalties. I really think there is something here to build on."
Next up for Hall and Rovers is a home game against Bradford Bulls.
Bradford have already beaten Rovers this season but Hall says his side have to win this time to keep their play-off hopes alive.
"We lost at Bradford earlier this season, but they haven't found the consistency they would like to have," he said.
"It's massive for us because we need the two points to climb the ladder. We'll have a big focus this week. We have to build on the good things we did against Hull."
Having seen his side lose from a winning position at the Magic Weekend, Hall is keen to ensure lessons are learned after letting Hull score three late tries.
"At 16-6, I thought we continued doing what we had done to get us into that position, but a couple of daft penalties and a couple of errors went against us," he said.
"The effort from the lads was absolutely brilliant, and the first 72 minutes was the best rugby we have played all year.
"I thought we played well at the KC on Good Friday but this was unreal. We felt in control after they scored early on.
"We will take the positives into the last few games and I think it will serve us well."
Whilst disappointed to be on the losing side, Hall could at least be happy with his own display against his former club.
His first-half try came from a brilliant piece of skill as he collected a high ball one-handed and spun on a sixpence to score in the corner.
It took his tally to 19 points in his last four derbies, and he admitted the occasion always brings the best out of him.
"I'm a Hull lad and it means a lot to me to do well in the derbies. I just like them," he said.
"In the first half it was pretty hard because the sun was in my eyes.
"For the try, the ball came to me at the last second. I just put my hand out and it stuck."
• Gallery: Pictures from the 219th derby
