Emanuel Miller scored a season-high 27 points and had nine rebounds as TCU beat ninth-ranked Oklahoma 80-71 on Wednesday night, making the Sooners the fifth Top 10 team — third from the Big 12 Conference — to lose to an unranked opponent over two nights. “It’s life in the Big 12,” Oklahoma coach Porter Moser said. Oklahoma (13-2, 1-1 Big 12) quickly erased a six-point halftime deficit when Javian McCollum hit two 3-pointers in the first 32 seconds after the break — the tying shot coming off a TCU turnover.