Despite starting in Scotlands first match of the 2009 Six Nations Championship, against Wales at Murrayfield, Lamont was dropped for the remainder of the tournament after a dip in club form was carried onto the international stage. He lost out to Thom Evans and Simon Danielli. Lamont's power and influence was missed as Scotland disappointed once again. Lamont's move to the Scarlets followed and in November 2009, under the guidance of new Scotland coach Andy Robinson, Lamont returned to the international stage. He played three November Tests, including a dramatic win over Australia at Murrayfield.