It's over a century since golf featured at the Games
With golf returning to the Olympics, this first year of the sport at the Games will produce a number of firsts.
In the men's tournament, Ireland are represented by Padraig Harrington who finished his opening round with a solid 1-under 70, while Seamus Power is also in action.
The first hole-in-one though has gone to Justin Rose of Great Britain on the fourth:
Justin Rose....— BetBright (@BetBright) August 11, 2016
And look what happens! Class....pic.twitter.com/i7EmtjthAp