Tranmere boss Ronnie Moore said the performance of referee David Phillips in the second half was the reason behind his side losing their unbeaten league record this season after a 3-1 defeat at Bournemouth.
Bournemouth turned in a strong second-half performance to triumph in Eddie Howe's first game back in charge of the south-coast club.
Three second-half goals, the first an own goal by Ben Gibson, plus Harry Arter and Simon Francis toppled the Moore's leaders after Jake Jervis had given them a first-half lead.
Moore said: "For me the second half was all about one man, some of those decisions were astounding. The Bournemouth full-back was like an assassin, I mean how many challenges were missed. I can't fault the effort, but we need some help from the people that should be making the right decisions."
Moore also blamed poor defending for his side's first defeat of the campaign.
He added: "I know the first one wasn't a free-kick, but we still have to defend it. It just wasn't going to be our day."
Cherries boss Howe credited his side's second-half performance on a much-improved tempo.
Howe said: "We just wanted to play quicker. I thought we were dominant and the early goal made a huge difference."
The former Burnley boss was also full of praise for midfielder Harry Arter.
Howe added: "He is a very good footballer technically thanks to his past in youth football. He has the ability to add goals to his game and I hope he can do that on a consistent basis. He is happy to get on the ball, which is what we ask him to do and we need that in the side."