The Cork side were pushed hard in the opening exchanges and after a close tense first half led 45-43.
In the second half Demons upped the tempo and with Kyle Hosford and Shane Coughlan excelling the defending champions were always chasing the game.
Demons player-coach Colin O’Reilly only played five minutes due to a chest infection and, surprisingly, played down his team’s 11th consecutive league win.
“We got a win and that was the most pleasing aspect but with a cup final in the back of the players’ minds I was not surprised how this game panned out,” O’Reilly said.
Killester were seldom troubled when accounting for UCD Marian 90-61 in a one-sided Dublin derby.
The Clontarf side led 39-27 at the interval but a 24-point contribution from Michael Bonaparte saw them run out comfortable winners, much to the delight of coach Jonathon Grennell.
“It was important to get a win following the disappointment of the national cup defeat and now its a case of remaining focused as winning the league is very much a priority for us,” he said.
Michael McGinn set a scoring record this season in the men’s Premier League when he amassed a staggering 47 points in his team’s 116-83 win over Moycullen.
The Cork side waited until the fourth quarter to play their best basketball, blitzing the westerners 37-8.
Dublin Inter were pushed all the way by Templeogue at Inchicore before eventually running out 79-72 winners.
Inter shocked Bord Gáis Neptune in last week’s National Cup semi-final but coach Sarunas Cesnakauskas wasn’t overly worried about their display.
“We are capable of playing better but hopefully we are keeping our best form for UCC Demons in what should be a memorable occasion for our club,” Sarunas said.
In the women’s Premier League DCU Mercy gained revenge for their semi-final cup defeat to Team Montenotte when defeating them 60-48 at Upper Glanmire.
The Cork side played well in the first half and commanded a 32-28-interval lead.
Amazingly Montenotte were restricted to 16 points in the second half as DCU dug deep to run out winners.
No slip-up for the champions UL Huskies as they travelled to Clontarf to play Killester and came away with a fine 77-54 win.
This game was a potential banana skin for the Shannonsiders, as they had lost to Killester at home in the league, but afterwards coach James Weldon was happy.
“I thought our focus and intensity was incredible and hopefully it will remain with us for our national cup final with Team Montenotte,” said Weldon.
Ulster Rockets surprised Singletons SuperValu Brunell 65-63 in Belfast and WIT Wildcats came away with maximum points at Meteors 58-48.