Meanwhile a delighted Weightman managed to crack her own personal best, by a mere fraction, as she clocked 4m00.09s, her previous best being 4m00.17s, which she had achieved back in 2014 in the Paris Diamond League.
Her only immediate disappointment was the fact that she just missed on ducking under the magical four minute mark.
Her performances so far this season have certainly been pointing towards this achievement, and her recent winning of the UK Championship has obviously been a timely boost to the 29-year-old Morpeth Harrier.
It is such a shame that she has not been able to transfer such form to the possibility of a third Olympics, which were scheduled to take place in Tokyo this summer, and were cancelled because of the Coronavirus epidemic, and are now rescheduled for 2021.
Third place in Sunday’s event went to Australian Jessica Hull, who clocked 4m00.42s.
Great Britain’s Melissa Courtney-Bryant finished an excellent fourth in 4m02.34s.