By SABC Sport
4th August 2024
The Wolverhampton runner was the fastest finisher in 44.78 seconds, ahead of the United States' Christopher Bailey who also booked a spot in 44.89 alongside Norway's Havard Bentdal Ingvaldsen.
Hudson-Smith, who was forced to miss the Tokyo 2020 Olympics after a series of injuries and setbacks, has courageously come back from a mental health crisis.
The former Wolves academy product, at one point American world sprint champion Noah Lyles' housemate for a year, picked himself up from rock bottom and revealed the depths of his struggles after collecting world bronze in 2022.
A year later he upgraded to world silver, and at the London Diamond League meeting two weeks ago ran a world-leading 43.74, lowering his own European record to send an emphatic statement to his Olympic challengers.
There was major news ahead of the fourth heat, when it was announced that Bahamian defending Olympic champion Steven had dropped out of the heats.
Great Britain's Charlie Dobson also made it through as top man in the sixth and final heat, battling through the final stretch to see off the rest of the field in 44.96.
Hudson-Smith and Dobson will look to book their place in the final during Tuesday eveningâs semis.