New York Giants running back Andre Brown broke his left leg, according to the team.
It marks the second consecutive year that he broke that leg.
It's a big loss for the Giants, leaving just starter David Wilson to shoulder the bulk of the workload.
Brown is apparently upbeat that he might be able to return this season.
Brown missed the entire season as a rookie in 2009 with a torn Achilles.
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Aaron Wilson covers the Ravens for The Baltimore Sun.