I'm happy to announce that there's a new webservice available within the FantasyFootballNerd.com API. The Nerd searches weekly projections from the best fantasy football sites on the Net daily and this new functionality has been exposed through the API. The API is free to use, however I recommend that you cache the results locally instead of hitting the API with every one of your user requests. Along with the player rankings you'll find a list of the current week's games.
If you have any questions, please feel free to email me. Enjoy!