The philosophy of every maintenance practice and operation in any organization is usually to provide a structurally sound and aesthetically appealing environment throughout the life of a property. Maintenance has generally been referred to as all works carried out to keep and restore an item to a currently acceptable standard. This work evaluates the performance of facilities maintenance management in the maintenance of sport complexes in South-West Nigeria. The study research method includes physical observation, administration of questionnaires to measure performance. In order to gather information, structured questionnaires were administer at the study area (the six stadia covered), the management staff, the maintenance staff and the user of the facilities in each of the stadia, covering kiosk owner, sport men and women, spectators, and lover of sports. The study revealed some factors affecting performance in the maintenance of sports complexes among which are: funding, organizational structure, political factors, ownership types, and security. The study concluded that it is only when adequate fund is provided and fully utilized in the maintenance of sport complexes that one will enjoy the initial investment in them and the consequent accruing benefits from the complexes will be achieved. The study recommended among others facts that the government should set aside part of her annual budget to maintenance of the sport complexes so as to ensure their fitness and world class standard at all time which will consequently reduce the operating cost and increase the revenue generating capacity of the stadium.