Description. About Us. MJ23 is a collaboration between Cornerstone Restaurant Group (CRG) and the greatest athlete of his generation, Michael Jordan. Located in the Mohegan Sun Casino in Connecticut, MJ23 is a modern sports bar featuring elevated bar food, craft beer and cocktails, and plenty of TVs to enjoy the game. While our delicious burgers and wings attract customer attention, it is CRG's Heartfelt Hospitality that creates a truly memorable...