Usain Bolt is still the world's fastest man!

The Jamaican sprinter has won gold in the men's 100m final in Rio - for the third time in a row.

Silver went to American Justin Gatlin, with bronze going to Canada's Andre de Grasse.

It's Bolt's seventh Olympic title and it looks like he may take home an Olympic trebel. He's won the 100m, 200m and four-by-100m relay in every Olympic final since 2008.

Ireland's medal hope Katie Taylor begins the defence of her Olympic boxing title this afternoon. While sailor Annalise Murphy from Dublin will start the Laser Radial medal race in third position this evening.