The ornamental design for a basketballtrainingstand, as shown and described.
FIG. 1 is a perspective view of my new design of a basketball training stand shown in a lowered configuration and with the leg portions in the closed position.
FIG. 2 is a perspective view of my new design of a basketball training stand shown in a raised configuration and with the leg portions in the open position.
FIG. 3 is a front side view of the design of FIG. 2.
FIG. 4 is a rear side view of the design of FIG. 2.
FIG. 5 is a left side view of the design of FIG. 2.
FIG. 6 is a right side view of the design of FIG. 2; and,