The sports bag assembly, which can accommodate the transportation and storage of sports equipment, entails a fully and permanently assembled integral transportation system comprising two or more wheels. The wheels can be deployed and retracted with a single mechanical movement, and may be stowed within the geometry of a traditional golf bag. The golf bag assembly will fit within the recessed areas of platforms attached to the rear of motorized carts; within conventional storage racks, lockers, and auto trunks typically found around golf courses and in residences; and within traditional golf travel cover containers or systems. The golf bag assembly also includes a ventilated club storage compartment, to facilitate the drying of grips, and drainage in the event of inclement weather. The golf bag assembly includes a support and suspension system that restrains the grip ends of clubs, thereby stabilizing and enhancing the protection of clubs during transport and play.