Five things to watch for in Week 9 in the NFL:
Peyton Manning vs. Andrew Luck
This is a good matchup under any conditions because Luck replaced Manning as the Colts’ quarterback in 2012. Still, Sunday’s duel has all kind of subplots. Although Manning’s Broncos are unbeaten at 7-0, he was struggling until last week when he put on a good showing while thrashing the previously unbeaten Packers. Luck, meanwhile, is struggling at 3-5 and has been battling injuries. Coach Chuck Pagano is under fire and fired offensive coordinator Pep Hamilton last week. Manning and the Broncos would seem to have a big edge this time.