You have multiple different question. However, find here that like Google, Yahoo also one of the top most searched website in the world and it has various features and apps. Once Yahoo was on top one in the most accessed website, after Google and Facebook and so on it has behind little bit.
Regarding Yahoo Fantasy Football and Yahoo Cricket, Google playstore has few apps and they are among them for sports lover in their Android smartphones. If you have Android smartphone, you may then easily download Yahoo Fantasy Football apps and Yahoo Cricket apps from there. You can updated information regarding Cricket or Football match as live from this apps in your smart device.
Yahoo Webmaster tool is somewhat similar to Google Webmaster tool, both works for its user, publisher and advertiser.
Yahoo BT is another different email access to get some extra benefit compare to normal Yahoo emails.