It's the first round of golf at an Olympics for over a century
Padraig Harrington and Seamus Power have carded solid opening rounds at Rio 2016.
On the first round of golf at an Olympics saw the Irish duo post a 70 and 71 respectively.
Harrington teed off first and his round of 70, leaves him on 1-under, seven off early leader Marcus Fraser of Australia who leads the way on 8-under after Day 1.
Power's 71 leaves him on level par with two birdies and two bogies.
Among the other high profile golfers from other countries, Great Britain's Justin Rose managed the first ever hole-in-one and finished on 4-under, while Sweden's Henrik Stenson is on the same score just weeks after winning The Open.
Spain's Sergio Garcia is just one clear of Harrington on 2-under.
USA's Rickie Fowler had a poor opening round of +4 as the lowest ranked American behind Matt Kuchar (-2), Patrick Reed (+1) and Bubba Watson (+2).