Japan midfielder Reo Hatate scored the opener as Celtic hammered Kilmarnock 4-0 to begin their Scottish Premiership title defense on Sunday. Hatate’s low strike from just inside the box found the net in the 17th minute at Celtic Park following a pass from Greg Taylor. Defender Liam Scales’ header off a corner doubled the home side’s lead in the 40th minute. Kyogo Furuhashi set up a deflected third by Nicolas Kuhn in the 59th minute, while the Japanese forward’s shot in the second-half stoppage time was saved into the path of substitute Anthony Ralston, who steered home from a narrow angle to c…