For a few seconds, it appeared the training partners and roommates here in Tokyo would score Great Britain’s first World Championships one-two in 18 years.
The Halifax runner is a medal contender in Tokyo and is even eyeing a new national record, still held by double Olympic champion Seb Coe from 44 years ago.
The Wolverhampton sprinter came into this event among the favourites for gold but notably struggled at Japan National Stadium, finishing fourth in a time of 44.68 seconds.