Newly-promoted Morton consolidated their place at the top of the First Division by defeating uninspired Uefa Cup entrants Dunfermline Athletic.
Peter Weatherson scored the only goal after 21 minutes with a sublime finish from the edge of the area.
Jim McAlister should have extended their lead when allowed a clear shot at goal but fired wide.
Dunfermline's misery deepened when Stephen Glass was sent off in the last minute for a second bookable offence.
Dunfermline: McKenzie, Shields, Muirhead, Young (Hamilton 80), Bamba, Scott Thomson, Harper, McManus, Burchill (Owen Morrison 56), Crawford (Simmons 76), Glass.
Subs Not Used: Woods, Murdoch.
Sent Off: Glass (90). Booked: Glass.
Morton: Robinson, Weatherson, Harding, Walker, Greacen, Keenan, Millar, Stevenson, Templeman, Graham (Linn 76), McAlistair.
Subs Not Used: Shields, Coakley, Black, McGuire.
Booked: Graham, Templeman.
Goals: Weatherson 21.
Ref: C Allan