Ryder Cup captain, Darren Clarke birdied the 18th at Augusta to comfortably make the cut on one over par.
The Dungannon born golfer, went to the turn in level par with birdies at the second and ninth offset by dropped shots at the fourth and seventh.
The 46-year-old dropped a shot at the 11th but bounced back with birdies at the 15th and 18th.
That left the 2011 Open Champion a full 15 shot behind the leader Jordan Spieth.
The America carded the lowest halfway total in Masters history to take a massive step closer to a first major title at Augusta National on Friday.
Spieth added a second round of 66 to his opening 64 to post a total of 130, one shot better than the previous best set by Ray Floyd in 1976.
Graeme McDowell joined Clarke on one over par after a second round 74.
“That was a bit ‘up and down’. I continued to drive it like a ‘wally’,” said Graeme.
“I have driven the ball terribly the last two days and to make the cut from there, I pretty happy.”
A second round 77 left Padraig Harrington outside the projected cut which looks likely to be two over par.
Shane Lowry fired a second round 72 but on three over he is also in danger of missing out on the weekend action.
Rory McIlroy, needing to win this week to complete the grand slam of titles was in danger of failing to make it through to the weekend after going to the turn in four over.