Two men exhibit and demonstrate the use of an automated tennis ball server on a tennis ball court.   An animation graphic appears exhibiting two gold cylinders inside of a metal bracket.   The animated graphic morphs into a real and actual version of the graphic, appearing on a outdoor tennis court and flanked by two men.  The two men standing next to the machinery place tennis balls into the machine, which in turn spits out the balls acting as an automated tennis ball server for a player who is standing on the other side of the tennis court with a tennis racket.