Denver Broncos tailback Travis Henry, the NFL's leading rusher through the first four weeks of the season, is facing a one-year suspension for a repeat violation of the substance abuse policy, multiple sources told ESPN.com on Thursday night. Henry, 28, was suspended by the league for four games in 2005 because of a repeat violation of the substance abuse policy. Under the league guidelines, another test within a two-year period would trigger a one-year suspension.