Mark McAllister’s decisive finish left Portadown with maximum points on the opening day of 2015.
The striker steered home a Chris Casement cross in the closing moments of the first half during a 1-0 win at Coleraine.
The 1-0 success - alongside a welcome clean sheet - has placed the Ports third in the Danske Bank Premiership, just three points behind leaders Linfield.
Clear sights of goal proved limited before the break - with Joe McNeill, a former Portadown player, firing wide then Casement delivering a low cross which evaded both Darren Murray and Sean Mackle.
Peter McMahon tested Michael Doherty between the Coleraine posts with a long-range drive around the half-hour mark then another Casement cross was headed wide of the target by Michael Gault.
Coleraine’s Ian Parkhill was left frustrated early in the second half when Billy Brennan produced a smart double save on his appearance in place of the suspended David Miskelly.
Murray called Doherty into action on two occasions, from a free-kick and open play, before Brennan enjoyed a final highlight to deny Stephen Douglas.
COLERAINE: Doherty, Hegarty, Douglas, Ogilby, McCafferty, Browne, McGinty, Mullan, Parkhill, McNeill, Kane. Subs: Canning, Watt, Miskimmin (Browne, 81), Lyons (McGinty, 73), Barton.
PORTADOWN: Brennan, Casement, Redman, Ramsey, Breen, P.McMahon, Mackle, Murray, McAllister, Gault, Garrett. Subs: Mouncey, M.McMahon, Twigg, Conaty, Lyttle.
Referee: Andrew Davey.