By John Helsley Staff Writer jhelsley@oklahoman.comOMAHA, Neb. — Josh Holliday extended a heartfelt salute to his seniors Saturday, once Oklahoma State's season ended at the College World Series. Holliday thanked those veterans — Donnie Walton, Corey Hassel, Conor Costello, Alex Hackerott and David Petrino — for their contributions in returning the Cowboys to Omaha and restoring widespread pride in the program. “It starts with the kids,” Holliday said.