STILLWATER- Oklahoma State is making its presence known throughout the Georgia high school football ranks. The Cowboys picked up their third verbal commitment from Georgia and added an important piece in the closing days of the 2009 recruiting class in defensive lineman Ryan Robinson from Mill Creek High School in Hoschton, Ga., according to a report on GoPokes.com. OSU's recruiting in Georgia is headed up by defensive assistant Glenn Spencer, who has spent the majority of his coaching career working in and recruiting the state. Robinson, 6-foot-4, 245 pounds, has a good combination of size and speed. His primary position has been defensive end, but his coach, Shannon Jarvis, told GoPokes.com he could develop physically into defensive tackle. The only remaining hang-up with Robinson is his academic situation. He has not yet qualified and might be forced to attend a junior college. He becomes OSU's 21st verbal commitment in the 2009 signing class. The Cowboys could still add as many as four more recruits to the class, though head coach Mike Gundy said last week the number varies based on several different factors. Verbal commitments are non-binding. The national letter of intent signing period for football players opens Feb. 4.