Men’s 400m Freestyle Gold: Lukas Martens (GER) -- 3:42.35 Silver: Sam Short (AUS) -- 3:42.37 Bronze: Kim Woo-Min (KOR) -- 3:42.60 4. Victor Johnasson (SWE) -- 3:44.68 5. Zhang Zhanshuo (CHN) -- 3:44.82 6. Marco De Tullio (ITA) -- 3:44.92 7. Petar Petrov Mitsin (BUL) -- 3:45.28 8. Oliver Klemet (GER) -- 3:46.86

Janton missed semifinals for his sole individual event by 0.09 seconds, but there is a possibility that he will swim on relays later in the week.

The stomach bug that has circulated through the U.S. swim camp apparently claimed Claire Weinstein among its number on Sunday.

Walsh earlier this month was named the Collegiate Woman Athlete of the Year and honored with the Honda Cup. She concluded her collegiate career at the University of Virginia with 25 NCAA titles (nine individual) and an unmatched 16-for-16 record in NCAA relay finals.

Gretchen Walsh won her first individual long course world title by nearly breaking her own 100m butterfly world record. Walsh clocked 54.73 seconds at the World Swimming Championships, just off her own record of 54.60 from May 3. She owns the top eight times in history.

Four-time Olympic champion and Australian superstar Ariarne Titmus will not feature in Singapore, a carefully considered decision that was made long before her heroics in Paris last summer.

The highly anticipated races of the week will feature the greatest female swimmer of all time, Katie Ledecky, going up against the rising star of Summer McIntosh. The two are expected to face off in the 400m and 800m Freestyle events in Singapore.

This photo gallery, curated by AP photo editors, features highlights from the World Aquatics Championships which are under way in Singapore. ___ Follow AP visual journalism:

Belgium’s Roos Vanotterdijk (photo above, left) has taken second place in the 100-metre butterfly final on Monday at the World Aquatics Championships in Singapore. The silver medal is Belgium’s first medal at a World Aquatics Championships in 27-years.

The 22-year-old erases her own 800m and 1,500m freestyle marks. Read more at straitstimes.com. Read more at straitstimes.com.