Dressel still swim threat for Chalmers

Laine Clark

Olympic champion Kyle Chalmers has been warned Caeleb Dressel will still be a Pan Pacs threat despite the American swimming superstar's surprise qualifying results.

Dressel, 21, will spearhead the near 60-strong United States team at next week's Pan Pacs in Tokyo despite the world champion suffering another upset loss when the five-day trials concluded on Monday (AEST).

Dressel was upstaged by 19-year-old Michael Andrew in the 50m freestlyle final on the final night of qualifying action at Irvine, California.

But the big shock came on the trials' first evening when Dressel finished a distant sixth in the 100m final in a time 1.33 seconds slower than his 2017 world titles effort which won a gold medal.

After also missing out in the 50m butterfly final in California, Dressel finally earned Pan Pacs selection by claiming 100m butterfly gold at the trials.

Dressel is still expected to line up against Australia's Rio gold medallist Chalmers in the 100m freestyle at the August 9-12 Pan Pacs in what looms as the showdown of the meet.

US team members can contest any event at the Pan Pacs even if they did not qualify for it at trials.

And Australian head coach Jacco Verhaeren believed Dressel would still be a 100m danger despite his hot and cold form.

"Absolutely. It's going to be a very tough event," he said of the challenge facing Chalmers.

"It (Dressel's 100m trials effort) goes to show the strength of the US and that we can take nothing for granted no matter who you are but I would say yes (Dressel will be 100m threat)."

Dressel announced himself on the international stage by equalling Michael Phelps' record of seven world titles gold medals at the 2017 championships in Hungary.

Meanwhile, Olympic 100m champion Simone Manuel gave Australia's Cate Campbell food for thought when she completed the freestyle double at the US trials.

Manuel won 50m gold in 24.10 seconds, bettering the US Open record set by Campbell in May 2008 as the fastest ever lap swum on American soil.

Kathleen Baker also looks set to impress in Japan after claiming three individual gold medals and setting a new 100m backstroke world record at the US trials.

Dressel, Manuel and distance queen Katie Ledecky will headline the US team but Rio gold medallist Anthony Ervin and four-time 2012 Olympic champion Missy Franklin missed out.