Cameron McEvoy of Australia is the No.1-ranked 100m freestyler in the world.
Cameron McEvoy of Australia is the No.1-ranked 100m freestyler in the world. DAVE HUNT

Ones to watch at the swimming world championships


Cameron McEvoy

After a poor Rio Games, the "Professor" is back as the No.1-ranked 100m freestyler in the world. Snatched his fourth national title from Olympic champion Kyle Chalmers in April, but the Queenslander is still searching for a first world title.

Emily Seebohm

Having claimed her 21st Australian title in April, the veteran backstroker and medley swimmer will represent Australia at her sixth world championship. The Queenslander won three gold - including two individual - in Kazan two years ago.

Mack Horton

The 400m freestyle champion from Rio is fresh from claiming a rare treble at the nationals, winning the 200m, 400m and 1500m freestyle - matching Grant Hackett's effort from 2008. The Victorian's best result at the worlds is 800m bronze in 2015.


16 year old Ariarne Titmus winner of the womens 800m freestyle final on day 1 of the Australian Swimming Championships at the Brisbane Aquatic Centre in Chandler, Sunday, April 9, 2017. (AAP Image/Glenn Hunt) NO ARCHIVING, EDITORIAL USE ONLY
Women's 800m freestyle winner Ariarne Titmus at the Australian Swimming Championships in April. GLENN HUNT

Ariarne Titmus

Keep an eye out for the 16-year-old from Tasmania, who collected the 400m and 800m freestyle crowns at the nationals, and finished runner-up behind Emma McKeon in the 200m, earning herself three individual swims in Budapest.

Bronte Campbell

The younger Campbell sister finally has her first national titles - the 50m and 100m freestyle, which are usually dominated by sister Cate. But the Queenslander is the reigning 50m and 100m freestyle world champion from Kazan. Cate is taking some time out.

Mitch Larkin

Another who missed out on the ultimate success at the Rio Olympics, forced to settle with a silver medal and a fourth-placing, the Queenslander will look to defend his two world championship titles from Kazan in the 100m and 200m backstroke events.


Katie Ledecky

The four-time Olympic gold medallist will look to repeat her 200m, 400m, 800m and 1500m freestyle clean sweep from Kazan. The American looks unbeatable in the 400 and 800, but super Swede Sarah Sjostrom will provide a real challenge in the 200m.


SHEFFIELD, ENGLAND - APRIL 20:  Gold medalist Duncan Scott of Uni of Stirling poses with the medal won in the Mens Open 100m Freestyle final on day three of the British Swimming Championships at Ponds Forge on April 20, 2017 in Sheffield, England.  (Photo by Dan Mullan/Getty Images)
Duncan Scott with his gold medal after winning the 100m freestyle final at the 2017 British Swimming Championships in Sheffield. Dan Mullan

Duncan Scott

With no Kyle Chalmers, fellow Aussie Cameron McEvoy is favourite to take out the blue riband 100m freestyle. But Scott will be right there taking it up to him as the first Brit to ever touch the wall under 48 seconds. He will represent Scotland on the Gold Coast next year.

Penny Oleksiak

Only just turned 17, the Canadian became the first Olympic champion born in the 21st century. She was also the the first Canadian to win four medals in the same Summer Games. She now has the chance to back up her Olympic gold in the 100m freestyle with a world title.

Chase Kalisz

With Michael Phelps racing sharks in retirement and Ryan Lochte "dancing with the stars" while suspended, these worlds will be the first major international meet not to feature either since 2000. So can the US continue its domination of the 200m IM? It'll be up to Kalisz.


Katinka Hosszu of Hungary reacts after placing silver in the Women's 200m Backstroke final, at the Olympic Aquatics Stadium on day seven of the Rio 2016 Olympic Games in Brazil, Friday, Aug. 12, 2016. (AAP Image/Dean Lewins) NO ARCHIVING, EDITORIAL USE ONLY
Katinka Hosszu of Hungary will be a hometown favourite at the world championships. DEAN LEWINS

Katinka Hosszu

Competing in her home pool, the Hungarian "Iron Lady" will look for another dominant display after securing three gold (in both IMs and the 100m backstroke) at the Rio Games. While Aussie Emily Seebohm is a threat, US star Missy Franklin is out injured.

Joseph Schooling

The American-based Singaporean, who beat Michael Phelps to glory in the 100m butterfly in Rio to collect his country's first ever gold medal, will contest the 50m, 100m and 200m fly, and the 100m freestyle. He wants to break Phelps' 100m fly world record of 49.82sec.