I built a site, Sports on TV Now for tracking all sports that are currently airing each day. You can filter by country, sport, league, and Live status. There are team pages, league pages, and player profiles.
Click on an event to get more details about the event, including where to watch (based on your country). There are also other tidbits in there like standings (if available), past head-to-head results, favorites, and more. No ads. No user signups.
I really just had an itch I wanted to scratch and was tired of either tracking down schedules or browsing horribly designed websites designed to show you ads, not information.