MORTON will take a crucial lead into the second leg of their Championship play-off final against Airdrie on Friday after a last gasp Robbie Muirhead winner tonight. The Greenock men were the better side throughout the match but had to wait until deep into injury time to make the breakthrough. Muirhead was in the right place at the right time to nod home a Brian McLean cross from a short corner in the 95th minute. It was a deserved reward following a good performance by Gus MacPherson's men, who went into the game with new signing Scott Fox in goal after player of the year Aidan McAdams was ruled out yesterday.