Abstract: The apparatus comprises a base and an upright which upright is used for supporting an obstacle for a missile. The apparatus is especially useful for supporting a tennis net, but does not need to be staked into the ground, neither does it need to be formed of ponderously-weighty material. According to an embodiment of the invention, the base is hollow, the same defining a reservoir therewithin, and the reservoir is fillable with fluent material, such as water or sand, to weight the apparatus -- that it might support the missile obstacle (net, or whatever) with sufficient rigidity. Too, then, the reservoir is ventable -- to discharge the fluent material -- whereby the apparatus can be carried and stored without presenting a weight or storage problem.