A photo of chunky Texas National Guard troops in Chicago went viral, and 7 were sent home. But there's nothing soft about Guard fitness standards.

But there was disappointment for defending sprint world champion Emma Finucane, who was aiming for a hat-trick of successive rainbow jerseys but saw her title defence end in the quarter-finals, while Britain will have no male athletes in the keirin final after early exits for Matt Richardson and Harry Ledingham-Horn.

It has been reported that Red Bull was the main team pushing for the new sprint race format which fans saw at the Azerbaijan Grand Prix. The new format consisted of Free Practice One followed by the qualifying session for the grand prix on the Friday.