An abbreviated look at what’s going on around the NFL on Wednesday, Sept. 7:
• The injury-depleted Giants are now scrambling to fill their middle linebacker spot after Jonathan Goff's season-ending knee injury. The problem they're running into: There's no ready replacement on the roster.
• All the attention around Detroit's defense has centered on its defensive line. It's the addition of middle linebacker Stephen Tulloch, though, that could be the move that puts the Lions over the top.
• 49ers safety Donte Whitner figures to have his hands full in Week 1 with Seahawks TE Zach Miller. Whitner, who has been criticized for poor pass coverage in the past, is looking forward to the challenge.
• The Bengals made a change on their QB depth chart, dropping ex-Central Michigan star Dan LeFevour in favor of Zac Robinson, who was recently released by the Lions. • Twitter may have helped the Eagles' Evan Mathis claim the starting left guard spot, after a fan's lineup suggestion sparked a preseason change.