PURPOSE: To easily contain the ball without opening a cap, and to easily carry and store the case by providing an arbitrary number of traps consisting of a synthetic resin having elasticity along the inside of a main body in one end of the cylindrical case, and constituting a rugged cap part at the time of using the ball.

CONSTITUTION: In an edge of a main body 1, an outlet and a rugged cap part 4 at the time of using a ball are provided, and as a ball inlet 3, a trap 2 protruded to the inside of the main body 1 is provided. When a fixed bottom part 7 of a case is gripped with one hand of the left or the right, and pressed against a court and a ground by prescribed force onto a scattered ball 6, the trap 2 of a synthetic resin having curvature and elasticity is opened in a shape of running along the diameter of the ball 6. After the ball 6 passes through, each one piece of the trap 2 returns to its original shape by operation of curvature and elasticity. The diameter for connecting the respective opposed tips of the trap 2 is made smaller than the diameter of the ball 6, by which, as for the ball 6, an arbitrary number can be contained by one piece each.