Katie Ledecky, racing while not very rested, still lowered her fastest time in the world this year in the 200m freestyle by a half-second Wednesday night.
And Lilly King set up another showdown with her Russian rival.
Ledecky took her second title in as many days at the USA Swimming Nationals, part of the TeamUSA Summer Champions Series, presented by Comcast.
The quadruple Rio Olympic champion clocked 1:54.84 to win by 1.84 seconds over Leah Smith, repeating their one-two finish from the 800m freestyle Tuesday in Indianapolis.
SWIM NATIONALS: Broadcast Schedule | Event Schedule/Results
The top two swimmers per individual event are in line to make the team for the world championships in Budapest in July, plus extra swimmers in the 100m and 200m frees for relays.
The women’s 200m free was loaded with not only Ledecky and Smith, but also Mallory Comerford, who on Tuesday swam the second-fastest 100m free ever by an American. Plus, Olympic 100m free champion Simone Manuel and Olympian Melanie Margalis.
They made up the top five in the 200m free final, putting them all in the world 4x200m free relay pool.
Ledecky has one race left at nationals, the 400m freestyle on Friday. She is the least tapered she’s ever been at a trials meet, meaning she should be much faster at worlds.
If she finishes top two in the 400m free, she’ll be in line to swim six events at worlds in Budapest, her busiest schedule yet at an Olympics or worlds. In 15 career Olympic/world events, Ledecky brought home 14 golds and one silver.
In other events Thursday, King took 2.2 seconds off her 200m breaststroke personal best to win in 2:21.83 over Bethany Galat.
Only Rebecca Soni and Micah Lawrence have swum faster among Americans all time. Only Russian rival Yuliya Efimova has swum faster this year (though significantly, 2:19.83). King of course won the Rio 100m breast over Efimova but didn’t make the Olympic 200m breast final.
Olympic silver medalist Josh Prenot failed to make the world team in the men’s 200m breast, finishing third behind Rio teammate Kevin Cordes and Nic Fink.
Townley Haas convincingly won the men’s 200m free in a personal-best 1:45:03. Haas had the fastest 4x200m free relay split in Rio but finished fifth in the individual final at his first Olympics.
His time on Thursday is second to only one man over the last three years — Olympic champion Sun Yang.
Rio 4x100m free member Blake Pieroni finished second Thursday (1:46.30) to nab the other world team spot.
Zane Grothe (1:46.39) and Olympic bronze medalist Conor Dwyer (1:47.25) were third and fourth and made the relay. The last time Dwyer did not qualify for the 200m free at a major international meet was the 2012 Olympics.
Olympic champion Ryan Murphy took the 200m backstroke followed by Jacob Pebley in a repeat of the Olympic Trials.
Kathleen Baker won the women’s 200m backstroke by 2.17 seconds in 2:06.38, the fastest time in the world this year. The Olympic 100m back silver medalist dropped 2.98 seconds off her personal best in the 200m back on Wednesday.
Regan Smith, a 15-year-old who finished second, will in Budapest become the youngest American to race individually at a worlds since Elizabeth Beisel in 2007.
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