By John Helsley and Erik HorneJust before heading across Hall of Fame Avenue for the first practice of the preseason Tuesday, Cowboys coach Mike Gundy ended a team meeting with some breaking news. Walk-ons Blake Jarwin, Brad Lundblade and Chad Whitener were going on scholarship. The players didn’t even have time to call or text home to deliver the good news to mom and dad, but when the short workout was complete, along with interviews with the media, phoning home was next on the list. “I’m going to shower, get cleaned up, and then I think I’ll go outside the coaches offices and sit down and call home,” Whitener said.Read more on NewsOK.com