Some useful links to sites that will give information for different sports
Wikipedia is always a useful first port of call for any but I have found these sites useful as well.
Boxing BoxRec – detailed look at professional boxing with career records and stats
Cricket – ESPNcricinfo – anything you want to know about cricket is covered in great detail
Cycling Cycling Archives – A site with a huge database of cycling results from events all round the world. Also has results from now discontinued events.
All Competitions – A Spanish site but in English as well. Comprehensive results of major events in many sports.
HickokSports.com – A site with a large list of records, champions and other information. An American site so particularly detailed on their main sports.
GBRSPORTS.com – hasn’t been updated for the last few years but is very good for many sports and has useful links itself
Sports Records – a comprehensive list of championship winners with excellent extra details on some sports
Sports Reference – Lots of detail in results and biographies especially on American and Olympic sports
Swimming – Swimming Statistics – a good site for results and stats which is easy to navigate