Monica Puig has won Puerto Rico's first-ever Olympic gold medal with a stunning upset over Germany's Angelique Kerber in the women's tennis singles final.
Puig is the first woman from the Caribbean island to win a medal of any sort.
Before her golden breakthrough, Puerto Rico had won just eight Olympic medals, two silver and six bronze. Six of that total had come in boxing.
Victory for Puig came in a dramatic seventh game of the final set when she saved six break points before taking gold on a fourth match point when a Kerber forehand sailed wide.
"Oh my God," she screamed before breaking down in floods of tears and parading her national flag around centre court.
Kerber had cruised into the final without dropping a set as the second seed aimed to emulate Steffi Graf, who was Germany's last champion at the 1988.
However, her perfect record in Rio ended when Puig grabbed the first set against a suddenly lacklustre looking German who required treatment on a back injury between sets.
Her medical timeout worked wonders as she broke in the first game of the second set.
Puig retrieved the damage in the eighth game but she faltered when she had the chance to serve for a 5-4 lead.
Kerber, 28, levelled the final in the 10th game but needed four set points to get the job done.
That set the foundation for the thrilling decider where Puig raced into a 5-0 lead before having to suffer for her place in history during a marathon seventh game.
Meanwhile, Petra Kvitova won the bronze medal play-off by defeating American seventh seed Madison Keys 7-5, 2-6, 6-2.
In an untidy clash, the two women hit a combined 87 unforced errors while Keys' challenge was undone by only converting two of her 10 break points.