After a nervy start, Ton took control of the game and opened the scoring right on the stroke of half-time when Stefan McCluskey confidently curled beyond Ryan Scully from inside the box.

The visitors’ full-backs combined to double their advantage on 50 minutes, Lee Kilday slamming high into the home net after meeting Mark Russell’s low cross at the far post.

On 76 minutes, Declan McManus wrapped up a fantastic 48 hours, which he began by winning his second Scotland Under-21 cap, when he rifled an angled drive into the bottom-left corner.

And teenager Russell capped what was arguably the Greenock’s men best performance of the campaign so far with a goal of the season contender in the final minute.

Although Jim Duffy’s men ended the day in the exact same position due to wins for Stranraer and Forfar, the nature of their victory will provide a massive boost for the final five fixtures.

Morton (4-3-3): Gaston; Kilday, Crighton, Lamie, Russell: Miller, O’Ware, Forbes; McManus (J. McCluskey, 87), MacDonald © (Caldwell, 71), S. McCluskey (Milojevic, 80).

Subs not used: Scullion, McKee, Caraux (gk).

Booked: Caldwell (79).

Dunfermline (5-4-1): Scully; Millen, Buchanan, McAusland (O’Kane, 80), Urquhart (Moffat, 53), Whittle; El Bahktaoui, Falkingham, Geggan ©, Hopkirk; Barrowman (Allan, 68).

Subs not used: Spence, Byrne, Thomson, Goodfellow (gk).

Attendance: 2,732 Referee: Crawford Allan