Oklahoma State upsets lethargic No. 3 Kansas 86-67

STILLWATER, Okla.

The narrow confines of historic Gallagher-Iba Arena were once among the most feared in the country, a deafening place where it’s been said the noise would make the light bulbs pop during wrestling meets. That story may be apocryphal. The building may have lost some of its mystique over the years. And sure, the place may have been half full on Tuesday night.

But don’t tell any of this to Kansas coach Bill Self, who dropped to 3-6 at his alma mater as No. 3 Kansas suffered an 86-67 loss at Oklahoma State. In a stunning upset that will send ripples through the Big 12 race, the Jayhawks were outclassed by a Cowboys team that entered the night with a 9-8 record before filling it…