FIFA API
FIFA (fifa.com) has 2 public methods: get world ranking and get tournament matches. Each costs 1 credit per completed run (1¢ with pay as you go); failed runs are free.
Unofficial. Not affiliated with or endorsed by FIFA.
Methods
2Gets the latest official FIFA men's or women's national-team ranking, with points and movement since the previous ranking. Unranked teams are excluded.
Returns release date, rank, country, confederation, points, previous rank, movement
Readfifa.com/get_world_rankingGets FIFA tournament matches in kick-off order, with scores, stages, teams and venues. The tournament name must include a year.
Returns tournament name; matches with stage, kick-off, teams, score, status, stadium, city, link
Readfifa.com/get_tournament_matches