Great Lakes Basketball Officials Consortium

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Officials Library

Your hub for curated rule resources, mechanics PDFs, and trusted interpretations for GLBOC officials.

A close-up of an official’s black-and-white striped referee jersey neatly folded on a wooden locker room bench, beside a pristine silver metal whistle attached to a black lanyard. The fabric shows subtle mesh texture and precise stitching along the collar and shoulders, while the whistle’s surface reflects tiny highlights. Behind them, a portion of a black duffel bag with a small embroidered Great Lakes emblem and a laminated rulebook edge peek into frame. Soft overhead fluorescent light creates gentle, realistic shadows without harsh contrast. Photographed from a slightly elevated angle, the composition uses rule of thirds, with a mild background blur. The overall atmosphere is organized, serious, and professional, conveying readiness for training and continuous improvement in officiating.