By Marlon Kelly

PETERBORO’ U 3Dean 1 (og), Clarke-Harris 35 (pen), Grant 50BIRMINGHAM C 0STAR MANJORGE GRANT PeterboroughNIGHTMARE START: Birmingham City’s Harlee Dean, far left, nets a first minute own-goal PICTURE: PSI/Andy ShawDARREN Ferguson marked a managerial milestone in stunning style as his Posh side blew the Blues away.On the day Ferguson broke the record of most games managed by a Peterborough boss, his 492nd match at the helm was among the happiest.The form book went out of the window as Posh, who had slumped to four successive Championship defeats, domin...