A2. PROVISIONAL TEAM ROSTER ? (PTR) A2.1. By 10th September, 2015, all National Federations and/or Associate Members must communicate to the WBSC the provisional (maximum 45 players) Team Roster (PTR), in a form provided by WBSC. A2.2 If any players, manager or coaches on PTR become unavailable after 10th September for injury, sickness or any other reasons that are approved by WBSC, those may be replaced on Provisional Roster before 10th October. National Federations must obtain WBSC’s approval in writing before making such changes. If medical reasons, a medical certificate in English or Spanish language must accompany the request when submitted to the WBSC.