Ravens backup quarterback Robert Griffin III suffered a hairline fracture in his thumb during practice on Saturday, according to ESPN's Adam Schefter.
Griffin is expected to miss four-to-eight weeks, reports Schefter. The 29-year-old quarterback hit his hand on pass rusher Tim Williams's helmet as he was following through on a pass from the pocket. Griffin revealed to reporters that he had an X-ray on his thumb but declined to share the results.
The Ravens signed Griffin to a two-year, $4.5 million extension this winter to keep him around as second-year quarterback Lamar Jackson's backup.