Monday 15 August 2016 05:02, UK
Savannah Marshall claimed victory in her round-of-16 middleweight fight against Anna Laurell Nash of Sweden.
Marshall - who claimed Britain's first women's boxing world title in 2012 - started brightly but slipped at one stage during the first round and Nash took it 3-0 with the judges.
The British fighter, however, responded well in the second and landed some good body shots.
She landed a big right late and took the round, setting up the third perfectly.
Her work rate was superb for the next two minutes, both on the attack and as a counter-puncher, and she won that round too, to lead 2-1.
The final round went the same way as the others, and the victory was duly sealed.