The Pittsburgh Steelers were supposed to win — and they did, on a game-ending, 53-yard field goal by Chris Boswell Sunday night. The 31-28 win over the Green Bay Packers was much-closer than expected.  A maturing Packer quarterback Brett Hundley connected on 17-of-26 passes for 245 yards and three touchdowns in an upset attempt which just fell short.  Running back Jamaal Williams rushed for 66 yards, including a dive into the end zone with just over two minutes left to tie the score at 28.  The Packers had their chances, but Steeler veteran Ben Roethlisberger drove his team from the Pittsburgh 30 to the spot where Boswell would end things in the swirling wind.  Wide receiver Antonio Brown caught 10 passes for 169 yards and two scores.  His toe-dragging catch of a 23 yarder on the sideline with seconds remaining helped set up the winning kick.  Green Bay tries to get back to the .500 mark when it hosts Tampa Bay next Sunday.