Rangers.com beat writer T.R. Sullivan has some info on the Rangers' plans for Triple-A.
Sullivan:
Nolan Ryan also owns the Round Rock team and it has long been a foregone conclusion that the Rangers would switch in 2011. The switch would help the Rangers gain inroads into the Central Texas market although they have enjoyed a strong following in Oklahoma City over the years.
Sullivan says it's "likely" the Astros will move their Triple-A PDC to Oklahoma City. But this is interesting: Mandalay Sports Entertainment owns the Frisco team, and is reportedly trying to buy the Oklahoma City franchise.