So far this season 14 different referees have been in charge of matches in the Premiership but having taken charge of two of the three Celtic v Hamilton matches last season Robertson will again be the man in the middle this weekend.
Last August he was in charge for the Celtic Park clash that was settled by a goal from Dedryck Boyata, in November Celtic went to New Douglas Park where goals from Ryan Christie, Leigh Griffiths and an own goal ensured a 3-0 away win.
Robertson is best remembered for the incredible penalty kick that he awarded against Erik Sviatchenko during Celtic’s 1-1 draw with Ross County in April 2017.
Since then he has been promoted onto the elite FIFA list, at the weekend he refereed Turkey’s 1-0 win over Andora.
Willie Collum will be back in action at Ibrox on Saturday for the visit of Livingston, his first match at that venue since a club statement claimed that he had underlying issues.