Houston wide receiver Andre Johnson is nursing an injured right hamstring and his availability for Sunday's game against Oakland is uncertain as the team seeks other medical opinions.
"We're still in an evaluation process," Houston coach Gary Kubiak said of Johnson. "We're going to get a couple different opinions here over the course of the next few days. ... He's going to miss some time. I don't know if that's three or four days. I don't know if that's a few weeks. I don't know right now."