Up until the Olympic, Hocker was an also-run without ever breaking 3:30. He wasn't even fast enough to eat dust of Jakob and Kerr, but came this Olympic, he'd become a world beater, taking 3 secs off his PB and breaking the OR. His progression didn't make sense. At least in Ruth case, she's always pretty good in the marathon. She ran 2:18 way back in 2018 and that was the 7th fastest time at the time.
But what about Rosa? I know you guys also love playing guilty by association. Fisher came from the BTC (Burrito Track Club). I don't know how he hacked the WADA with his new coach, but he's no less shady, association-wise.