Holbeach United overcame a slow start on Sunday morning to smash six goals in their opening UCL Premier Division game of the season.
The Tigers trailed after six minutes as Jordon Macleod put Peterborough Northern Star in front with a low drive.
But the turning point came on 20 minutes when home captain Jonny Clay was sent off for tripping Danny Spencer in the box with Lee Beeson converting from the penalty spot.
Holbeach took the lead through Ash Fuller and made it 3-1 early in the second half as Liam Parker headed home.
Northern Star were reduced to nine men just past the hour mark when Phil Stebbing was dismissed following another clash with Jamie Stevens.
Holbeach substitute Livo Dube added two goals and in stoppage-time Jake Duffy made it 6-1.
Holbeach: Conroy, Allen, Gibson (Dube 62), Warfield, Parker, Stevens (Meade 72), Beeson, Duffy, Spencer, Pinner (King 66), Fuller. Subs not used Elliott, Delahoy.
Goals: Macleod 6; Beeson pen 20, Fuller 32, Parker 49, Dube 71, 78, Duffy 90.
Sendings-off: Clay, Stebbing.
Full coverage in Tuesday’s Lincolnshire Free Press