Adjustable batting tee having a removably attachable base mechanism

A portable batting tee assembly comprising:

• a first tubular post having a lower end, an upper end and an inner surface;
• a second tubular post telescopically engaged with the first tubular post,
• a ball support coupled to the second tubular post;
• a base;
• and
• a post mount mechanism including a support body, an expansion plug and upper and lower fastening elements, the support body including a cylindrical bearing portion and a base engaging portion connected to the base, the bearing portion, the expansion plug and the upper fastening element configured to be removably received within the lower end of the first tubular body, the post mount mechanism removably attachable to the first tubular post in a first position wherein the bearing portion, the expansion plug and the upper fastening element are positioned within the lower end of first tubular support and the outer diameter of the expansion plug bears against the inner surface of the first tubular post to fixedly secure the lower end of the first tubular support to the mount mechanism, and a second position wherein the first tubular post is movable with respect to, and separable from, the bearing portion and the expansion plug.