No one has, and no one ever will.
The "tri" in tricycle means three wheels, so you can't have a two-wheeled tricycle. It'll be a bicycle, or possibly a tricycle with one wheel missing.
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Tennis For Two was the first computer game.
the first sport ever invented was rugby, in Greenland! :)
James Naismith invented the game by nailing a couple of peach baskets on two ends of a court.
Two-way mirrors were first invented in 1835 by a German chemist named Justus von Liebig. The original purpose of two-way mirrors was for use in scientific experiments to observe reactions without being seen by the subjects.
There were two early inventors of sports cars, Herbert Austin and Ferdinand Porsche, but Porsche is credited with the first. That car was the Porsche 356.