NFL odds and lines, Chargers vs. Eagles By Kenneth Arthur @KennethArthurS on Sep 12 2013, 11:56a + Brad Mills-USA TODAY Sports One of these teams was able to pull off an upset in Week 1, while the other blew a 21-point lead to a heavy AFC favorite. How big of an underdog is San Diego in Week 2? This post was imported from a legacy archive. Please excuse any formatting inconsistencies. Related