Much like his beloved backup quarterback, 49ers head coach Kyle Shanahan sees ghosts on the field too.
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Even as San Francisco clearly had a win against the Steelers in hand on Sunday, many starters remained on the field through the fourth quarter. This included Brock Purdy, who was making his regular season return after getting elbow surgery this offseason, and Nick Bosa, who was supposed to be on a capped snap total. Shanahan told reporters Wednesday that the decision not to pull guys comes from "experience," later referencing one particular game from his past.