what the hellthat's strange
Looks like a white 72deg Ramp Corner brick with glowfx floating under a black object, perhaps the ball vehicle, in with the limbo skybox with your FOV at max. Possibly utilizing farlands warping.How close?
on some skyboxes, if you make the ground clear and look down, you see a low poly circle that appears when you look down. i have 120 fov so that could be why
What is your graphics card