Quincy Hall snatches gold medal on the line in Men's 400m final

American Quincy Hall dug deep in the final metres to overhaul Britain's Matthew Hudson-Smith and take the Olympic 400 metres gold in another race of scintillating quality on Wednesday.

Hudson-Smith seemed on course to win his country’s first gold over the distance since "Chariots of Fire" Eric Liddell in the Paris Games 100 years ago, but he tied up at the end and Hall swept past to win in a personal best 43.40 seconds and give the U.S. their first triumph since LaShawn Merritt in 2008.

Hudson-Smith bettered his own European record with 43.44 for silver and Zambia's 21-year-old Muzala Samukonga set his second successive national record with 43.74 to take bronze.

The first five men home were all under 44 seconds.