Hamilton Accies survived a late scare to hold on for maximim points at Cappielow.
David O'Brien's strike five minutes from time threatened to spoil the visitors' afternoon after first-half goals from Jon McShane and Andy Ryan had given them a comfortable lead.
The visitors opened the scoring in the 11th minute when McShane met Ryan's pass on the volley from 12 yards and crashed the ball past goalkeeper Colin Stewart.
Ryan doubled his side's advantage in the 30th minute when he let fly from 35 yards and the ball nestled in the bottom corner.
Morton halved the deficit after 85 minutes following O'Brien's neat finish from 12 yards, but Hamilton hung on to claim a deserved three points.
Morton: Stewart, O'Ware, Weatherson, Evans, Forsyth, Bachirou, McGeouch (Di Giacomo 61), Tidser, O'Brien, MacDonald, Campbell (Jackson 60). Subs Not Used: McGinley, Ramsay, Kasubandi.
Goal: O'Brien 85.
Hamilton: Hutton, Canning, Neil, Mensing, McAlister, Redmond, Andy Ryan (Spence 81), Kilday, Routledge, McShane (Anderson 61), Stewart (Hendrie 86). Subs Not Used: Blair Currie, Gillespie.
Booked: Canning, Mensing.
Goals: McShane 11, Ryan 30.
Ref: John Beaton