Two goals each for Ryley Nicholson-Barfoot and Jamie Cogings sealed a comeback win after Crowland went into the break 1 up.
The firsts win the league with two games still to play, having gone the full official season with a 100% record before the league added an extra round of fixtures.
The Sunday team will be hoping for more success in the coming weeks with two cup finals to look forward to.
First up on the 27th of March is the Peterborough Sunday Cup final against Crowland Town at Yaxley FC.
The final game of the Sunday season is on the 2nd of April when Stanground Cardea look to defend our Hunts Sunday Cup versus Orton Wanderers.