The Texas Longhorns swept the regular-season series with the Oklahoma State Cowboys on Tuesday night at the Moody Center. The No. 10 Texas Longhorns hosted the Oklahoma State Cowboys at the Moody Center Tuesday night looking for their first season sweep over the Pokes since 2016. And behind 8 of 13 shooting from 3-point range and 50.9 percent from the field against one of the best defenses in the conference, the Longhorns (17-3, 6-2) came away with a convincing 89-75 win over the Cowboys (11-9, 3-5). Tuesday’s contest was a far cry from the first meeting in Stillwater on Jan.…