Offensive lineman Jesse Robinson, 6-foot-6, 275 pounds, of L.D. Bell High School in Hurst, Texas, is the latest addition.
And while it's nothing new to see the Cowboys hone in on Texas recruits, it's unusual to see so little interest in Oklahoma players.
According to Rivals.com, the Cowboys don't have any offers out to uncommitted in-state players.
FOUR COWBOYS ON LATEST ESPN 300
Wide receiver who have committed to OSU had a significant presence on the latest ESPN 300 prospect rankings released this week
Fred Ross of Tyler, Texas, led the list at No. 176, while Ra'Shaad Samples of Dallas Skyline was No. 197, and Marcell Ateman of Wylie, Texas, at No. 247.
Also on the list was defensive tackle commit Vincent Taylor of San Antonio was No. 273.
The top-rated receiver on the list, Crete-Monee (Ill.) senior Laquon Treadwell, remains one of OSU's top targets. He is No. 20 on ESPN's overall list.