This version of Super Sports Challenge, also from Europe and marked as Unlicensed and with a Plug-Thru Cart, indicates a variant of the game already described. The ‘Plug-Thru Cart’ designation implies it was designed to function in certain NES models or with specific cartridge configurations.  Its unlicensed status points towards independent development and limited official documentation.

Super Sports Challenge (Europe) (Unl) (Plug-Thru Cart)

Super Spike V'Ball (USA)