I'd say that yellow transformer is now out of service, this setup is a little confusing, I can't see what the transformer is/was for, the other junction box looks to power the sportslighters currently.

the yellow cylinder is definetly a transformer,probably an old one because the HV Bushings are on the side not the top...don't know why it's yellow never seen a yellow transformer.

Yep, it is a small distribution transformer. I remember my high school had them for the field lights. It had a similar setup as this with the same type of box cutout fuses. They were incandescent and later MH. 6 or 8 steel poles with about 12-18 or so incandescent lights per pole. It is easier to control high voltage - lower current with an oil switch than low voltage - high current. Also a smaller gauge wire and thicker insulation is cheaper. The next time I am there in Long Beach, I'll see if they are still there and get pix.