Implementations of a tennis ball pickup tube attachment bag are provided. In some implementations, the tennis ball pickup tube attachment bag comprises one or more pieces of material attached together and forming an enclosed interior and a corresponding exterior. In some implementations, the tennis ball pickup tube attachment bag also comprises a first opening and a second opening into the enclosed interior. In some implementations, the tennis ball pickup tube attachment bag also comprises a first securing loop and a second securing loop. In some implementations, the tennis ball pickup tube attachment bag also comprises a first securing strap, a second securing strap, and a third securing strap.In some implementations, a method for using the tennis ball pickup tube attachment bag comprises coupling the tennis ball pickup tube to the tennis ball pickup tube attachment bag, attaching the first securing loop and the second securing loop respectively to the first retainer wing and the second retainer wing of the tennis ball pickup tube, attaching the first securing strap to the carry strap loop of the tennis ball pickup tube, and attaching the second securing strap and the third securing strap respectively across the length of the tennis ball pickup tube.