STILLWATER — If Oklahoma State fans felt like luck was against them Saturday night, then Sunday afternoon probably justified those feelings. After Saturday’s 56-20 loss at Texas Tech, the 8-2 Cowboys fell four spots to No. 13 in the Bowl Championship Series standings. And the Cowboys were passed by the Missouri Tigers, who jumped two spots to No. 12, even though they lost their head-to-head meeting with OSU in October. But after hurting the Cowboys last week, the computer rankings were more supportive this time. OSU was No. 13 in both human polls, but the Cowboys’ computer average was 11th. In the Associated Press poll, OSU slipped three spots to No. 11. Go to Page 20B to see the BCS standings and to Page 19B for the college football polls for this week.