Denver Broncos quarterback Brian Griese is limping on a sprained left ankle Thursday, the result of getting tangled up with his dog and falling down some stairs at his home Thursday night.
Griese's availability for Monday night's game in Baltimore is uncertain. He is listed as probable on the team's injury report, but he said his ankle is sore and still somewhat swollen.
Coach Mike Shanahan said the injury is severe enough that X-rays were taken to be sure there was no fracture.
Griese did not practice Thursday.