Pranksters left a leather football, which had been prised open and carefully filled with concrete, on the public playing field over the weekend.
A dog-walker discovered the malicious ‘joke’ on Sunday.
Written on the ball were the words: “I bet that hurt.”
The dog-walker, who asked not to be named, said: “We walked around the perimeter of the cricket pitch, which is in a raised part of the playing fields, and I noticed the ball pretty early on – it was my intention to go over at the end of the walk and kick it to the side somewhere.
“As I was heading towards it, I noticed it looked a bit misshapen and deflated, so I just very lightly tapped it with my foot. I obviously noticed straight away it was very heavy.
“The concrete patch was visible too, and on closer inspection I saw someone had scrawled on it.”
Although the ball has not yet been put on the scales, its weight ha been estimated to weigh somewhere between 15kg and 20kg.
Anyone who tried to kick it as if it were a normal football would have done themselves lasting harm.
The dog walker said: “Someone has gone to a lot of effort to do this, and to keep the ball round to make it look as realistic as possible.
“It was clearly intended to injure someone, there are some not very nice notes written on the ball and it’s definitely been done with a bit of malice.
“I wouldn’t have thought it was done by kids either, as I doubt they would have access to concrete and the sort of materials you’d need to make it look that realistic.”
The man managed to pick up the ball and carry it away from the playing fields.
After posting images of the ball to Facebook, he said he had been encouraged to record the nasty find to local police.
One commenter wrote: “That could change someone’s life. If someone were to kick that at full pelt they could suffer injuries that would take months to recover from and they may never walk the same again.
“A real nasty, nasty thing to do. Unbelievable.”