The pint-sized battler, 20, beat Balbriggan’s Robbie Cannon by one hole after working with him on his fitness for the past four years.
Two down after four, he was still two down after nine and one down with four to play but dug deep to win the 16th in par to level the match and the went one up for the first time when Cannon double bogeyed the 17th.
Then in a dramatic finish he missed the 18th green but after Cannon’s 20-footer stopped on the lip, he drained a 10 footer for a winning par and his first amateur ‘major’.
Delighted to get the win after near misses in the Lytham Trophy and the Irish Amateur Open last year, Hume said: “I was down early and got off to a bad start so I said to myself, ‘Be patient you’re playing well. Just stick it out and gradually get back into the match.’ ”
“I told myself grind it out and the first time I was up was on the 18th tee and eventually got the win. So I’m delighted.”
Hume was beaten in a playoff for the Lytham Trophy before a 72nd hole error cost him a chance of a playoff for the Irish Amateur Open last year — a title won by Cannon.
But he learned from his mistakes, explaining: “It would have been easy to let the head drop but I dealt well with that aspect of things. I’m really happy with that.”
“To be able to stick it out and get over the line and get a win like this means a lot. I don’t think I would have recovered from a bad start like that last year but I am a year old, a year smarter and a year more experienced and hopefully I can pick up another couple of trophies.”
Cannon trains a host of top amateurs and professionals at his Morton Stadium base and Hume was delighted he’s worked so hard on his fitness with the 35-year old Dubliner.
He said: “I train with him up in Santry and in a way, he was happy to see me win. Maybe my stamina made the difference in the end.”
Cannon, 35, hit a wedge to six inches at the 18th to beat Reeve Whitson by one hole in the semi-finals as Hume defeated West Waterford’s Gary Hurley 3 and 2.
The final was not a high quality affair with Cannon approximately five over to Hume’s three over. But it still thrilled a huge local crowd under a cloudy Rosses Point sky with light winds only getting up late in the round.
Disappointed to hit two poor tee shots at the 16th and 17th, but happy for his pupil, Cannon said: “I played a bit better on the back nine but I just lost my timing altogether.
“I am delighted for Jack. He is probably the nicest kid who plays on the circuit. So if I had to lose, I am glad I lost to Jack.
“I have trained him for the last four years as his strength and conditioning coach and seen him develop from a boy into the gentleman he is now.”
Like Cannon, Hurley had no complaints about his semi-final defeat having done well to come back from four down after eight to take the match to the 16th.
“He played really well, especially off the tee,” Hurley said of Hume, who had six birdies and just one bogey in their 16 holes. “It’s not like I gave it to him. He went out and won it.”
Semi-finals: R Cannon (Balbriggan) bt R Whitson (Mourne) 1 hole; J Hume (Naas) bt G Hurley (West Waterford) 3/2.
Final: Hume beat Cannon by 1 hole.