GREEN BAY, Wis. -- When San Francisco 49ers guard Alex Boone heard the fans at Lambeau Field moan, he knew quarterback Colin Kaepernick was destroying the Green Bay Packers once again."Everyone yelled and got quiet," Boone said. "I knew Colin was at it again."It was third down and eight from the Green Bay 38-yard line with 1:13 with the NFC wild-card game tied at 20. Had the 49ers failed to convert, it is unlikely a long field goal in frigid weather would have been attempted.