Keisei Tominaga put on a show for the crowd Thursday as he was crowned U.S. college basketball’s three-point shooting champion. The sharp-shooting Nebraska Cornhuskers guard was among an eight-man field for the contest held in the lead-up to the National Collegiate Athletic Association men’s basketball tournament’s Final Four in Phoenix, Arizona. Tominaga attracted huge cheers for his audacious performance in the opening round of the shootout at Phoenix Convention Center, waiting until the last second to fire off his final shot, then turning his back to the basket as the ball swished through t…