SportsPulse: Crazy comebacks and devastating injuries defined a jam-packed Sunday. USA TODAY Sports’ Mackenzie Salmon reacts to all the biggest story lines from Week 2 around the NFL. USA TODAY

Week 2 of the NFL season is nearly wrapped up and 10 teams left Sunday with a perfect 2-0 record.

Meanwhile, 11 teams are on the opposite end of that and will enter Week 3 looking for their first victory. Even though it’s still early in the season, some trends continued to become clear. The reigning Super Bowl champion Kansas City Chiefs can still seemingly score on any given drive and no lead is safe, the Atlanta Falcons still need to work

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