STILLWATER, — The Oklahoma Sooner women pulled off a 77-75 upset of Oklahoma State in the final seconds of Wednesday’s Bedlam game. With the game tied at 75 with three seconds on the clock, Madi Williams hit a layup off an in-bounds lob from Tatum Veitenheimer to lift the Sooners to victory. OU improves to 8-6 overall and 1-1 in Big 12 play with Wednesday’s victory. Oklahoma State moves to 10-4…