... was supposed to be a marquee matchup between two potential playoff teams. 

The Indianapolis Colts are a perennial powerhouse and the San Diego Chargers never lose this time of year. One of those things held true. 

In this game, Peyton Manning had one of the worst days of his storied career, while Philip Rivers delivered another chapter of his MVP-like season. 

Read on for a drive-by-drive analysis and grades for each team. 

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