Editor's note: ESPN senior NFL writer John Clayton's "First and 10" column takes you around the league, with a look at the best game of the week, followed by primers for 10 other games. Here's his look at Week 4 of the 2006 season.
First San Diego Chargers at Baltimore Ravens Sunday's AFC showdown between the Chargers and Ravens looks like a heavyweight fight. It's the NFL version of "The Contender."
In two games, the Chargers' defense entered the ring looking like the new bullies ...
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