LAST year's champions Sligo Rovers had to survive a second half onslaught at the Brandywell before eventually winning 1-0.
The reigning league champions took the lead after 31 minutes when Raf Cretaro drove into the Derry box before squaring the ball to Anthony Elding who easily slotted home.
Gavin Peers could have doubled Sligo's advantage before Derry had some big chances in the second half with Mark Griffin missing when one-on-one with Gary Rogers and the home side had strong claims for a penalty when substitute Michael Rafter looked to be upended inside the box by the out-rushing Rogers but the ref waved play on and Sligo survived.
Bohemians recovered from a poor start to beat 10-man UCD at Dalymount Park UCD had made the better start but were dealt a cruel blow on 20 minutes when Mark Langtry was sent off for a foul on Chris Lyons in the box.
Lyons dusted himself down to blast the resulting penalty straight down the middle to give Bohs the lead.
The Students were level on the hour-mark as David McMillan slotted home from the penalty spot but Bohs hit back with Keith Devaney firing home from eight yards five minutes later to seal the win.
Bray Wanderers got their 2013 campaign off to the perfect start with a 1-0 victory over Shelbourne at the Carlisle Grounds.
After an even start to the game Paul Crowley was dismissed for a rash challenge on Daire Doyle and Kieran Marty Waters almost gave Bray the lead before the break.
Bray made their numerical advantage tell in the second half when veteran striker Jason Byrne headed home Waters cross on 68 minutes.
Trevor Croly had to settle for a draw in his first league game in charge of Shamrock Rovers as his side played out a goalless stalemate with Dundalk at Oriel Park.
With Stephen Kenny's bitter departure from Rovers last season offering an interesting sub-plot, Dundalk made the better start and looked a much better side than last season.
Patrick Hoban's header was well saved by Hoops keeper Barry Murphy early on while James Chambers 30 yard free-kick was the best chance for Rovers in the first half but it was easily saved by Peter Cherrie.
Rovers were handed a huge chance to take the lead after 70 minutes after Billy Dennehy was taken down in the box but Gary McCabe's tame penalty was well saved.
Dane Massey was sent-off late on for the Lilywhites who held out for a draw.