Are you flat footed? I have a flexible flat foot, and that happens to me all the time. It's mainly when I jump and do fast footwork when i'm "on my toes." It usually goes away for me by the next day though.
No flat foot but feels the pain after a heavy game.....even not playing, I felt sharp pain also but still able to wlak as per normal
Here is one (of hundreds) of sites with information. http://www.sportsinjuryclinic.net/cybertherapist/front/foot/plantarfaciitis.htm Of course, nothing beats talking to someone who can actually examine you. Good luck.
