ENGLEWOOD, Colo. -- It turned out Denver Broncos running back J.K. Dobbins ' hope he could help to revive the team's offense was not to be, as the sixth-year running back will be placed on injured reserve, likely ending his season if the Broncos don't make it to the Super Bowl, sources tell ESPN's Adam Schefter.

Dobbins suffered the injury in the third quarter of last week's 10-7 victory over the Las Vegas Raiders . Dobbins said he believes the injury occurred on a hip-drop tackle, which are not allowed by league rules, but added after the game he believed he was "OK'' and hoped for good news from the team's medical staff.

But Dobbins had not practiced since the injury as he and the team gathered information even as coach Sean Payton continued to say a move to injured reserve was o

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