Grading the 49ers' players and coaches halfway through the season

The 49ers' season should be dead right now. And yet, the 49ers' record is 6-3, and they've beaten all three teams in the NFC West.
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Based on Math Alone, Where Does Andy Richter’s 'DWTS' Run End?

But then the numbers tighten. Once Andy faces dancers who also have strong fan bases, such as Jordan, Dylan, Robert, or Alix, ...