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Hello and welcome to NewsHour from the BBC World Service.

We're coming to you live from London. I'm Sean Lay.

Friday's star-studied draw for the FIFA Men's World Cup next year was also attended by the leaders of the three host countries, Canada, Mexico and the United States.

But it was US President Donald Trump, who dominated proceedings.

Later on Saturday, we'll get the arguably more important news of where the matches are going to be played at the start of the contest.

It matters because of the high temperatures likely if start times are intended to attract the largest global audiences and therefore the most

lucrative advertising. John Brewer is a professor of applied sports sciences at Samarries University,

London, and he was part of the England backroom staff at the 1990 World Cup in Italy. John,

thanks for being with us on News Hour.

The England manager, I think, to start with him, Thomas Tuchel,

has also omitted his preference for later kickoffs.

How important is scheduling going to be at this World Cup?

I think, Sean, it's going to be very important.

We know from previous World Cup, if we look back at Qatar and Brazil, the last two, heat has been a real issue with those games.

Because the body produces heat when you exercise, when you play football, your body temperature increases.

And through sweating and conducting that heat into the atmosphere, you can keep cool and keep safe.

But, of course, if the environment

is hot and also if it's humid as well, it becomes much more hard for the players to keep cool,

to maintain their body temperature. And so later kickoffs, cooler conditions, drinks,

and so on, I think are going to be all important. What did they do earlier this year at the Club World Cup, if anything, to mitigate the impact of those playing conditions?

Or they now need to learn lessons from what happened earlier this year?

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