Las Vegas Raiders running back Josh Jacobs enters Week 17 as the RB2 in fantasy football (half-PPR), propelled by 306 carries and 11 rushing touchdowns. His usage as a bell-cow running back this year has made him a top-tier option at the position, including finishing as a top-20 RB in seven of the last eight weeks. Jacobs has an uphill battle this week, though, facing off against a San Francisco 49ers defense that ranks as the toughest matchup for opposing fantasy RBs. With quarterback Jarrett ...