curl -X POST "https://api.altsportsleagues.ai/v1/leagues" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "World Cornhole League",
    "sport": "cornhole",
    "country": "US",
    "website": "https://worldcornhole.com",
    "description": "Professional cornhole competition"
  }'