The assault took place at around 6pm on Saturday, when it is reported that the girl was in the park off Bankwood Crescent, Rossington, when an unknown man approached and asked for her phone.
When she refused, the man is alleged to have chased the teenager and pushed her to the ground, before punching her in the face a number of times.
The girl suffered substantial bruising to her face.
Following the assault, residents in Rossington and across the borough say they are concerned that Doncaster’s parks are no longer safe, even in broad daylight.
Speaking on social media, Sue Taylor said:”I would not walk through a park on my own. Sad but true .I did years ago but not now.”
Rossington councillor, John Cooke, called the attack ‘very disturbing’.
He said: “I’m very shocked that this has happened here. We’ve had problems with things like anti-social behaviour in other parks in Rossington but not this one.
“My sympathies go out to the poor girl this happened to, and I will raise this at the next council meeting and see if we can possibly get security measures increased around that park. But I do think this is probably one of those one-off sort of incidents.”
The man is described as being white, between 30 and 40-years-old, around 6ft 4ins tall with an athletic build. It is believed the man was wearing a grey hooded jacket and a white t-shirt, but had his sleeves rolled up with a red/orange tattoo on his left forearm.
It is thought that the man may have been with another man, though he did not approach the teenager.
He is described as being white, in his 20s and wore a black hooded top with the hood up. Anyone who witnessed the assault, or who saw the two men described in the park, is asked to call police on 101, quoting incident number 924 of June 25.
Alternatively, you can also email [email protected] or contact Crimestoppers anonymously on: 0800 555 111