Perhaps there was no better reaction than that of Dobson, which seemed stunned after coming from apparently nowhere with 100 meters away to overcome world -class competition.
Hudson-Smith Olympic and Silver Medalist crossed the line secondly in 44.27, ahead of Zakithi Nene from South Africa, who has executed the fastest time of the world year with 43.76.
“I don’t know what happened,” Dobson told BBC Sport.
“I got to the last 100 meters and felt very good. I was catching everyone. I thought of Myelf, if really deep, I can get them, and I did!”
After having achieved the victory in the female height jump with its clearance for the second time to 1.96m, Lake prospered under the entire crowd and was close to the British record with three solid attempts at 2 m.
While Kuld did not deliver the record of records he expected, he will take lessons of his defeat against Koech and have time on his side with two months until his defense of the world title in Tokyo.
“It should be extracted, so I’m frustrated,” Kerr said.
“I really wanted to appear and win for this crowd, but all that I can promise now is that in a few months I will be fighting for a gold medal for this country.
“I will bring it home and then everyone can see what we were working for today.”
The former 200m world champion, Asher-Smith, reviewed Hunt while crossing the line in 22.25 seconds, with the hunting in constant start of 22.31 to establish a new better staff, exceeding its world record of children under 18 of 22.42 six years ago.
But the 100 -meter Olympic champion Alfred demonstrated a previous class, registering the ninth ninth 200 m faster or all the time while assaulting the victory in 21.71.
Rhasidat Adeke de Ireland was fourth at 22.52, with Daryll Neita Sixth at 22.69.