It isn't so unusual. A quick review of the past 10 seasons:
In 2014, 1 playoff team had a sub 9-7 record (Panthers were 7-8-1).
In 2013, 2 playoff teams had a 9-7 or worse record (Chargers, 9-7; Packers 8-7-1).
In 2012, 0 playoff teams had a 9-7 or worse record.
In 2011, 3 playoff teams had a...