The team featured in the video is the Les 4 Chevaliers. They are a Montreal-based club similar to the Harlem Globetrotters.
The player in the video is Renaud Lefort. You’ll notice that he walks into the lefty side of the batter’s box, but does so with a right-handed stance. It doesn’t matter. Lefort still manages to hit a home run on a behind-the-back swing. The whole thing is pretty impressive.And Insanely crazy.