There were 4WD tyre marks in doughnut shapes across Jim Allen Oval.

This is the second time this year the oval has been vandalised by drivers doing burnouts.

Read more: Northern Suburbs Bulldogs homeless after hoons do burnouts on Jim Allen Oval

Northern Bulldogs Rugby League Club president Peter Carroll said it was "devastating" to have to have the field damaged again after Wollongong City Council put up bollards to deter any more hoons.

"Whoever did this has driven up the steep embankment on the eastern side and have gotten around a barrier," he said.

"We are talking to Wollongong City Council to see what they can do. Hopefully bollards can be put on the eastern side to close any way of accessing the grounds."

Northern Suburbs Bullpups president Kellie Favelle and the vandalism was "heartbreaking" for her club, the seniors and the wider community who used the grounds.

"The senior and junior clubs have small committees," she said.

"The damage is upsetting because whoever did it doesn't comprehend how much time and effort goes into running a volunteer club."

Ms Favelle said a nearby neighbour had heard the car on the field but by the time she got to the window, the car lights had been turned off and then the car took off.

She said the silver lining was the junior football season ended last weekend and the seniors had played their last home game.

"The first time in April was before the start of the season but now we have finished," Ms Favelle said. "At least it won't disrupt our games."

A Wollongong council spokeswoman said the council was "disappointed" to see the sportsfield vandalised.

"Council staff have visited the field to assess the damage," she said.

"We will work with representatives of the Northern Districts Football Club and the Illawarra District Rugby League Association as we look to complete the repair work to the playing surface as soon as possible."

To the delight of the club, the council acted quickly in April to repair the damaged turf, top dressed the oval, and put in large concrete blocks to help prevent cars getting onto the surface.