The XML Soccer Java Library by Paweł Mazur is a Java client for the XML Soccer API. This Java client library assists developers in creating applications for the presentation of live scores and statistics available on the XML Soccer API site.
FantasyData.com, NFL statistical data provider, offers the FantasyData NFL API. The API gives developers access to NFL data (e.g. team stats, live scores, season information, box scores, and more). The API targets web and mobile app owners who develop apps for the fantasy football market. Many of the most popular fantasy football apps have already integrated with FantasyData's APIs.