After winning the draw, the Labour leader also chose to give the first speech – an advantage coveted by all debaters.
“The benefit of going first is huge – you get to set the agenda of the debate if you go first,” Mr Koutsoumbos said.
“If that first statement has set tongues wagging and got people really engaged, then there’s a good chance that they’ll pay slightly less attention to Boris Johnson’s opening statement because they’ll be looking for responses to that first statement.
“It’s his chance to decide what should and shouldn’t be important in the debate.”
While missing the chance to set the tone, the Prime Minister can take consolation in the fact he will get the last word.
“There’s always an advantage given to the person who speaks last for the very simple reason that anything they say in that statement can’t get a response from the other side,” Mr Koutsoumbos said.
“So if he chooses that closing statement to maybe sling a bit of mud, he will deny Jeremy Corbyn the opportunity to respond to that in real time.”
Mr Johnson is famous for his ability to wing speeches with no preparation – or even a firm idea of whom he’s addressing – so should Mr Corbyn expect to be on the back foot in this debate?
“As a speaker and as someone capable of really moving audiences, I wouldn’t write off Jeremy Corbyn,” he said.
“But speaking in a debate is not the same as giving a speech – you’re having your every claim scrutinised and he will want to think more carefully about what he will say.”
Painful moments since his appointment include a police officer collapsing as he mangled the caution during a speech in Wakefield, and a speech to the UN in which he described a future where “your fridge will beep for more cheese”.