Defeated Rovers coach Craig Sandercock says video referee Steve Ganson's decision to award Hull a controversial match-winning try in the Magic Weekend derby was "a tragedy".
The Robins had let slip a 10-point lead in a frantic finish at the Etihad but looked set to share the spoils with the scores tied at 16-all with two minutes to go.
Then, Danny Houghton's hopeful punt evaded Greg Eden on the bounce, allowing forward Chris Green to gather and score under the posts.
Referee Ben Thaler went upstairs for Ganson to approve the score and replays showed Green was ahead of Houghton when the ball was kicked. But Ganson awarded the try and Hull completed a 22-16 win.
Speaking after the match, Sandercock said: "We replayed it on our computer. He was five metres offside.
"It's a tragedy and I will be disappointed if he (Ganson) doesn't come out and publicly apologise to our supporters and players.
"It's blatant. I was yelling instructions to go for the field goal and everyone in this room could see that. If they come out and say Greg Eden touched the ball ... he was a million miles away. I expect the video referee to give an apology to our club."
The RFL admitted this evening that Ganson had made the wrong decision.
In a statement, it said Ganson "deeply regretted" getting it wrong and had been in touch with Rovers to offer his apologies.
Speaking before that statement, Sandercock added: "There are some very upset boys in our dressing room.
"For the team we fielded today to go to within a whisker of beating a pretty good Hull FC side, that would have been a wonderful achievement. I can can cop a forward pass, but I can't cop a video referee getting something so easy so wrong."
Wigan's Man Of Steel Sam Tomkins joined the chorus of criticism. He took to Twitter to claim the decision was "the worst I've ever seen".
• Gentle: Rugby league gods were kind to Hull
• Match report: Hull FC shock Rovers in late derby comeback
• Gallery: Pictures from the 219th derby