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.

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

Summer McIntosh beat the field by nearly two seconds to take gold in the 400m freestyle at the World Aquatics Championships in Singapore.

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.

Two competitors skipped their opening races on July 27. Read more at straitstimes.com. Read more at straitstimes.com.

Katie Ledecky vs. Summer McIntosh in the 800-meter freestyle is the highlight of the first major international competition since Paris.

It's been a tough go for Team USA at the World Aquatics Championships, but the team won't leave the event without a gold medal. Gretchen Walsh secured the squad's first gold Monday, winning the 100m butterfly and setting a championship-record time in the process.

Watch live coverage of every race at the swimming worlds on CBCSports.ca and CBC Gem, with finals beginning at 7 a.m. ET each day.