Badminton King or Queen of the Court

Game I play with 4th and 5th grade.  2 students play each other to see who can score 3 points first.  Winner continues as the king or queen of the court as the non-winner goes to the waiting line.  The first person in the line becomes the new challenger.  Please see video for the rules.  Kids like it and say they have fun playing it!  I try to group according to ability levels, but do switch students around so that they can maybe play others rather than the same 4 or 5 opponents.