Rios is not in the lineup Friday, due to an aggravated right ankle injury, the Houston Chronicle's Jose de Jesus Ortiz reports. He is available off the bench Friday, but isn't expected to start for at least a couple days. He dealt with an ankle injury in late July, and while it's not clear how he aggravated it, the injury would help explain why he has been so mediocre of late. He has just three hits -- all singles -- over his last 26 at-bats, so hopefully a couple days off will help get him back on track. Shin-Soo Choo will start in right field Friday.