Van Niekerk runs 43 for 400m. Can't he run 7 seconds slower and then do another lap like that and break the 800 WR?
I mean, going 7 seconds slower that should be very easy for him. I think I can go 2 laps 7 seconds slower per lap than my one lap time. And his 7 seconds are even easier because it's bigger portion of his overall 400m time