Paris Olympics, day 5: Everything you need to know

Paul O'Donovan and Fintan McCarthy go in the semi-final of the lightweight men's double sculls this morning. 

IN ACTION: Paul O'Donovan, right, and Fintan McCarthy during the men’s lightweight double scull heats at Vaires-sur-Marne Nautical Stadium. Photo by Brendan Moran/Sportsfile

What you might have missed yesterday 

Daniel Wiffen won Ireland's first gold medal of the Paris Olympics, and the second in the pool, by claiming victory in a thrilling 800m freestyle final.