Peterhead 1-3 Greenock Morton
Declan McManus and Ross Caldwell grabbed late goals as Morton stayed within a point of league-leaders Stranraer.
Ton keeper Derek Gaston made first-half saves from Kevin Dzierzawski and Andrew Rodgers.
Peterhead hit the front after the interval thanks to Rodgers' penalty, after he was downed by Sean Crighton.
But a McManus double edged the visitors ahead and Caldwell made it 3-1 in stoppage time.