(AP) -- Oklahoma State's stay in the top 5 was a brief one.
The ninth-ranked Cowboys' attempted climb back begins Friday night on their home court against South Carolina in the Big 12/SEC Challenge.
After a week at No. 5, Marcus Smart and the Cowboys (7-1) lost 73-68 to Memphis on Sunday in the championship game of the Old Spice Classic. Smart was held to 12 points on 4-for-13 shooting, going 0 for 5 from 3-point range after scoring a career-high 39 against Memphis in a 21-point win on Nov. 19.