Medal table mathematics
Mo Farah's victory in the men's 5,000 metres takes Great Britain to 27 gold medals in Rio, two ahead of third placed China in the medal table.
By our maths, GB will guarantee themselves an astonishing second place finish in the Olympic medal table if Joe Joyce wins his gold medal bout in the men's super heavyweight boxing competition (Sunday, 19:15 BST).
Even if he does not, China - currently on 25 golds - would require 28 gold medals to usurp Team GB by virtue of Britain having won more silver medals (22 to China's 18), and they only have four events in which to do so.
One of these events is the women's gold medal volleyball final, in which China are currently trailing Serbia one set to zero.
However, in the event that China wins volleyball gold, they would still need an almost improbable and unprecedented sequence of results in which they:
Win men's marathon gold (no male Chinese athlete has ever won an Olympic medal before)
Win men's freestyle -86kg wrestling gold
And win men's cross country mountain biking gold.
In other words, put a beverage of your choosing in the fridge because it's [probably] not going to happen and Britain will almost certainly secure yet more history in Brazil.