Posh were set for a League One promotion party as they raced into a 2-0 lead in just 24 minutes. Scores of fans started to congregate outside the stadium ready to celebrate and some let off fireworks, something that appeared to inspire the Doncaster players.
They hit back to draw level by the hour mark and in a breathless finale they came as close as Posh to winning the game.
Butler said: “We didn’t start as well as we should have, but after going 2-0 behind we played some good football.
“It was a pleasing performance which showed we can match a top side, but just a shame that it has come too late in the season for us.
“I told the players that we want to finish on a high and carry it on into next season.
“We could hear the Peterborough fans outside the ground, but I listened again at the end and they seemed to have gone. The fireworks had stopped as well!
“Peterborough are a good side who fully deserve to be where they are and I’m sure they will get promoted.
“We have delayed the party and that’s credit to the players for not letting Peterborough be able to celebrate in front of us.
“But we know we should be in the play-offs ourselves and being totally honest we’ve let ourselves down.”
The point left Doncaster in 13th place. They are eight points outside the play-offs after a run of six points in the last 13 matches.