The Javelin saw O'Connor throw for 50.16, which put her on top with 5812 points.

In a thrilling finish, the race was won by Jakob Ingebrigtsen with a time of 13:15.29, his fourth title in a row, in what was his first race of the season.

He was expected to be joined by Cian McPhillips, but it was not to be, as he looked far from his usual self, finishing seventh in his heat.

The semi-final was won by Australia’s Peter Bol in 1:46.21 ahead of Japan’s Allon Tatsunami Clay (1:46.47) and Jamaica’s Navasky Anderson (1:46.65).