Here’s a position-by-position look at the key injury updates coming out of the NFL Week 1 and heading into Week 2:QuarterbacksWashington Football Team QB Ryan Fitzpatrick (hip-IR) was knocked out of the Chargers game and is set to miss 6-8 weeks with QB Taylor Heinicke in line to start.Running backsSan Francisco 49ers RB Raheem Mostert