Seamus Power will join Padraig Harrington on the Ireland men's golf team for this summer's Olympic Games in Rio.
Power, who is from County Waterford, plays on the second-tier Web.com Tour in the US and is a three-time Irish youths champion.
Ranked 290th in the world, Power confirmed that he is ready to go to represent Ireland after Rory McIlroy, Shane Lowry and Graeme McDowell all opted out, citing concerns over the Zika virus.
Leona Maguire will be Ireland's sole female representative at the games.
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Meanwhile International Golf Federation (IGF) president Peter Dawson has claimed that there has been an "overreaction" to the threat of the Zika virus.
More than 20 male players have now opted out of competing in Rio, with the world's top four - Jason Day, Dustin Johnson, Spieth and McIlroy - all citing concerns over Zika, a mosquito-borne virus which has been linked to defects in newborn babies and Guillain-Barre, a rare neurological syndrome which causes temporary paralysis in adults.
So far, South Africa's Lee-Anne Pace is the only female player to withdraw.
"We have invested a huge amount of time and effort on player education and they've had no lack of opportunity, I think, to make their own well-informed decisions about what they want to do," Dawson said.
"It's certainly disappointing that we've had so many withdrawals on the men's side, and wonderful that all of the women have been very supportive.
"There is no doubt that the number of withdrawals hasn't shown golf in the best light and we have to accept that. But we do understand why these individual decisions have been taken.
"Personally, I think there's been something of an overreaction to the Zika situation, but that's for individuals to determine. I have no knowledge that people are using Zika as an excuse. I think there is a genuine concern about this, not just amongst the players but among their families, their wives and their girlfriends.
"What I'm hoping is that when we come to play in Tokyo in 2020 that the top players do support Olympic golf. I think it's very important that they do. It's the biggest grow-the-game opportunity available and I can't think of a better way for players to give back to the game, frankly, than to support Olympic golf."
