Athing assuming her hamstring isn't that bad still. Please go for an American Record-ish time. This is the best way to salvage the season. PR at 400m set up for another 1:54.x next year or even this year if she's fit enough.
If she even comes remotely close to Syd's time Next season's storyline would be insane. Athing Mu strikes back after Leaving Kersee and takes Syd over 400m. Then goes for either a 4/15 double or 4/8 double at the next world champs. Her next gold will be must see tv and it would be so cool if she were battling Sydney.