Sports For Dummies: Playing Surface Diagram

Basketball 
http://www.basketball-goals.com/IMAGES/spalding/basketball-court-dimensions.gif

Tennis
http://www.novasports.com/graphics/courtten.gif

Soccer
http://img.quamut.com/chart/691/01soccer%20field.jpg

Hockey
http://content.answers.com/main/content/wp/en/8/8a/HockeyRink.png

Football
http://www.ncaa.org/champadmin/football/football_field.gif

Track and Field
http://www.sportspectator.com/fancentral/track/track_field_diagram.jpg

http://www.sportsstuffandsurfaces.com/Images/Field%20Diagrams/TrackField1.gif