Jamieson's compatriot Lawrie, the 1999 British Open winner, was tied for seventh on 209 with Ireland's Shane Lowry and Englishman DannyWillett after all carded 70.
England's DannyWillett, Scot Paul Lawrie, Irishman Shane Lowry, Frenchman Julien Quesne, Indian Jeev Milkha Singh and Dane Thomas Bjorn are all in the group with current Open champion Ernie Els a shot further back.