TENNIS, ORIGINAL NAME LAWN TENNIS GAME IN WITCH TWO OPPOSING PLAYERS (SINGLES) OR PAIRS OF PLAYERS (DOUBLES) USE TAUTLY STRUNG RACKETS TO HIT A BALL OF SPECIFIED SIZE, WEIGHT, AND BOUNCE OVER A NET ON A RECTANGULAR COURT. POINTS ARE AWARDED TO A PLAYER OR TEAM WHENEVER THE OPPONENT FAILS TO CORRECTLY RETURN THE BALL WITHIN THE PRESCRIBED DIMENSIONS OF THE COURT. ORGANIZED TENNIS IS PLAYED ACCORDING TO RULES SANCTIONED BY THE INTERNATIONAL TENNIS FEDERATION (ITF), THE WORLD GOVERNING BODY OF THE SPORT​​​​​​​