So looking at the features of Yahoo's Fantasy Sports API, it seems that most of the gathering data abilities refers to data that can be collected in a currently active league or a league that people have played in in the past.
Is there a way for the API to access hard data from the past (let's say the year 2013) such as the passing yards of all QBs or rushing yards of all running backs without having to sign into a league?
Or would we need to just scrape it ourselves off of websites?
On another note, does Yahoo release projected points?
From the API
This shows that you can filter the data to get info from specific seasons meaning that whatever information you want you can get through filters. Hope this helps.