Las Vegas Raiders running back Josh Jacobs (ankle) had his day cut short in the Week 12 blowout loss to the Falcons after just 10 touches and a fumble after he suffered an ankle sprain, according to a source. Jacobs is undergoing tests on Monday, but it sounds like the injury looked worse than it is. The second-year back hasn't missed a game this season, but he might be in danger of sitting out in Week 13 in an excellent matchup against the winless Jets. He'll be a no-doubt RB1 for that matchup ...