They are often competitive casualties cast aside after a match, but tennis balls are bouncing back to life thanks to a recycling center as big as a ball machine. Meet the Green Machine.

The picture e presented a striking visual, an expanse of ground covered by leaves of one uniform color against the bright green tennis ball, effectively camouflaged. One used quipped after failing ...

tennis ball! We've tracked down some of the *real* stars of Wimbledon, to find out what's on the minds of these little green balls ...