I just spotted that in addition to the standard soccer field markings, the field at Beckwith Park seems to have some large circle markings overlaid.
Or at least it did at the time this Google Maps sat photo was taken.
My first thought was the big rings are just some Google overlay, but it looks like they're actually on the field itself just like the soccer markings.
Second thought was track & field events like Shot Put etc. But all the field events I can think of have more of a uni-directional or conical area of activity.
Anyone know what the big rings are for?
UPDATE: Looks like it's for cricket! Cricket field diagram
Not sure why the outer ring is offset, all the images google shows me of "cricket field markings" shows centered rings, but apart from that the markings are a solid match for Cricket.
Cheers, who knew we had not one but two cricket fields in town!