A man dressed in a black sweatshirt and black shorts, along with another person dressed in white athletic wear are standing in a tennis court near the net.  They are both holding tennis rackets.  The person in black is giving a tutorial on how to return a serve in tennis.  There is a player demonstrating the serve as the coach explains.  Then the person in white begins taking about more about the tennis serve and how to play effectively.  The player continues to demonstrate the serves.