Bol was pressed hard on the riot by the American Shamier Little who was separated via the goal photo.
Little had 52.39.
The third in the race, the Ukrainian Anna Ryzhykova, also ran for 53 seconds with 52.96, which was a new national record.
Bol looked at the clock in astonishment after lowering the personal record by almost a second.
- It is completely incomparable if that is true, but it does.
Oh, oh what an Olympics we will have in this branch. It is fun that a runner from Europe is challenging and that it is not just American shoes, says SVT Sports expert Kajsa Bergqvist.
On Sunday morning, Sydney McLaughlin set a world record with 51.90 in the US Olympic qualifiers.