The source of more
knee injuries than can possibly be imagined. Players unfortunate enough to play on astroturf can look forward to
shortened careers,
turf toe, and for
baseball players 140
oF gametime ground temperatures.
ESPN has a commercial running right now in support of a constitutional amendment banning astroturf.
Update 2001/10/15 (Thanks to VT Hawkeye for pointing out this scene is a reenactment of a scene from Bull Durham.