The semi-finals was set to take place later on Friday."I thought I was reading the board wrong, it's the craziest thing", the 20-year-old told reporters.
"The comparisons are probably inevitable".
Yet it was downright Phelps-like the way he pulled off a remarkable night of swimming at Duna Arena. Every single race, he is ready to race, he is ready to go.
The current MHSAA state record holder in the 100, 200 and 500 freestyle, Comerford was part of another American gold medal group, swimming the second leg of the USA women's 800 relay team, which defeated runner-up China by more than one second.
Caeleb Dressel can make history on Sunday by matching Michael Phelps's feat in winning a seventh gold medal at a world aquatic championships.
The 23-year-old became the first woman to swim the 100m freestyle in under 52 seconds with a new world-record of 51.71 last Sunday. "That's the push I need, hats off to them". "I don't think it puts any more pressure on me".
"This kid is on fire!"
He's the first man ever to win three gold medals in a world championship night, and the first to win the 100 at worlds in both freestyle and butterfly. "So damn fun to watch buddy!"
The relay time shaved more than three seconds off the previous record the U.S. team set two years ago in Kazan.
The final relay was merely a coronation, the Americans romping to gold in 3 minutes, 19.60 seconds - eclipsing by almost 3 1/2 seconds the mark they set two years ago at worlds.
Dressel began his historic evening in the men's 50m freestyle, posting a world textile best time of 21.15 seconds.
The gold medal in the 50m free was the USA's first in this event since 2007.
But Ledecky, a D.C. area native and the star of the 2016 Olympic Games, may look back at Budapest with a little disappointment.
Ledecky won in 8:12.68, which was almost 8 seconds off her world record at Rio de Janeiro.
"I've never walked away from a season completely satisfied, even previous year", Ledecky said.
"It's really good to know that they believe in me", she said.
"I guess I was watching the heat before and I decided that if I was too slow I might not get through", said Seebohm.
Another stand-out performance today came in the semi-finals of the women's 50m freestyle as Sjostrom clocked a world record time of 23.67.
Home-crowd favourite Katinka Hosszu can win her second individual medley title of these championships in the women's 400m final.
In her second race of the tournament, Comerford helped set a world record as part of the 400 mixed-medley relay team, which logged a time of 3:40.28 in Wednesday's prelims.
Chalmers missed the world titles in order to have corrective heart surgery but admitted he could waste no more time preparing his Olympic defence after witnessing Dressel's heroics.
"It's unbelievable to know that he's leading us all off", said Comerford. Kathleen Baker of the United States took bronze. "It's really impressive, really cool to see". Mixed relays, with men and women on the same team, are a new event for the 2020 Tokyo Olympics.
In the space of one hour and 42 minutes, Dressel, 20, rewrote the record books of worldwide swimming. "But I had mixed relays helping me out, so it's a bit different".
"That last relay was a lot of fun", Dressel said.
"I got my a** kicked. It was such a blast".
"It's sad when I can't do it", said Sjostrom. So I have 24 hours until my next swim.