Well, it is just an other funny way to present here some tutorials around some sport items.
In the next weeks you can find here some ideas to create these sport balls ( header) or other  things using the great vector software Inkscape.
Download the free Software here and try it out: http://inkscape.org I`m loving it !
Go for gold and have fun with this lessons !

Heathenx from Screencasters has recorded an video about creating this tennis ball:
http://screencasters.heathenx.org/