Rory McIlroy shot 1 under Thursday at Royal Portrush, a better start than the first time he played the British Open at the Northern Ireland course near home.

Here's what to know about McIlroy's roots, from his hometown and upbringing, to his young golf career before he emerged as one of the best players in the world. McIlroy was born in Holywood, County Down, Northern Ireland in 1989. His father was also from Holywood, while his mother was from Lurgan, County Armagh.

The hometown hero is back at Royal Portrush, but Rory McIlroy was poor off the tee again as the Open Championship rolls on.

HOLYWOOD, Northern Ireland — Two decades before Rory McIlroy’s career-defining triumph, when he finally conquered his Masters demons with an emotional rollercoaster of a win at Augusta National, he did, in fact, already own a green jacket.

As a 16-year-old at the 2005 North of Ireland Amateur Championship at Royal Portrush, Rory McIlroy shot a course record 61. That was the old course, before redesign. It's a course he recognizes only parts of now.

Rory McIlroy grew up in Holywood, Northern Ireland, and learned to play golf at Holywood Golf Club. I visited and took the "McIlroy Tour."

So here is our final major big board of the year, ranking the top 30 golfers in the field. This is not simply the 30 best golfers in a vacuum. These are the 30 golfers that our crack team of Gabby Herzig, Hugh Kellenberger and Brody Miller believe are best suited to win this week at Royal Portrush.

What time does Rory McIlroy tee off at The Open? Start times, how to watch, prize money and latest odds - Masters champion targeting second career Claret Jug on home turf in Northern Ireland