King's Lynn Stars continued their push for the Elite League play-offs and all but ended Peterborough Panthers' hopes of a top four finish on Thursday.
With a 36-18 lead after heat nine, the Panthers scraped a 46-44 home win.
But the result cost them a league point, and handed the visitors a vital bonus point, 24 hours after the Stars had prevailed in the reverse fixture.
"We're less than pleased with certain parties," Panthers boss Trevor Swales told BBC Radio Cambridgeshire.
"We've not jut thrown away a point tonight, we've thrown away four points with the meeting the night before.
"And we're not going to qualify for the play-offs if we keep doing that.
"I've always said nobody's job's safe whether you're number one or number eight."
Stars boss Rob Lyon told BBC Radio Norfolk: "In heat ten the belief started to come back and you could see it drain on the other side.
"We've put ourselves in a position of making it into the play-offs on our own merit and a win against Birmingham, certainly by more than six, would clinch it I believe."