The wonky white markings have been daubed onto a pitch on Town Field - and show crooked corners, twisted touchlines and shoddy sidelines.
Balasz Berki, who spotted the blunders, said: "An incredible talent is living amongst us in Doncaster and made this piece of art on Town Fields.
"I had to take photos of this hidden gem and share them with you. I wish I had a drone with a camera on it - Doncaster's got talent!
It is not clear when the pitch markings were created or who by. Both Doncaster Council and the area's dozens of junior, amateur and pub teams are all responsible for marking out pitches across the borough.
He added: "That's a good clue to why England can't win a World Cup. The lines are always straight and we're not used to it."
PHOTOS: Balasz Berki