Real-Time Sports Betting Odds API

I'm in need of a robust API that fetches real-time odds for football, basketball, and tennis from various sports betting websites.

Key Requirements:
- The API must support fetching odds for the mentioned sports.
- It should provide this information in real-time.

Ideal Skills:
- Proficiency in API development.
- Experience with sports betting websites.
- Understanding of real-time data handling.

Please provide examples of similar projects you've completed.