Women's 100 free
"It was a good swim, it was a good time. But I definitely have more to give tomorrow night. I just wanted to get out there and swim a good race.," Guehrer said. "I do not want to expect too much, then I might end up with nothing."
Lithuania's Ruta Meilutyte (53.54), USA's Megan Romano (53.57), Germany's Daniela Schreiber (53.59), Russia's Veronika Popova (53.82), Brazil's Allesandra Marchioro (53.95), Sweden's Michelle Coleman (53.96), Bulgaria's Nina Rangelova (54.01), Japan's Haruka Ueda (54.04), Australia's Angie Bainbridge (54.10), Hong Kong's Sze Hang Yu (54.15), Spain's Melanie Costa Schmid (54.25) and Brazil's Larissa Oliveira (54.27) also made their way into the semifinals.
Men's 400 IM
Japan's Daiya Seto cruised to the top seed in the distance medley with a time of 4:04.28, while
"I'm looking really good this time. I'm just going to enjoy the competition tonight," Seto said. "I am going to be aggressive in the first 200 meters. Breaststroke is my biggest strength, so I am going to swim really fast in the breaststroke leg."
Women's 50 fly
USA Swimming decided that American records set in techsuits after Oct. 1, 2009 -- when USA Swimming implemented the techsuit ban domestically - would not be ratified. This is the case even for times swum legally in international events where ban was not in effect yet.
Ottesen Gray (26.02), Italy's Silvia Di Pietro (26.05), Belarus' Aliaksandra Herasimenia (26.06), Poland's Anna Dowgiert (26.15), USA's Claire Donahue (26.15), South Africa's Vanessa Mohr (26.17), Italy's Ilaria Bianchi (26.20), Sweden's Louise Hansson (26.28), China's Jiao Liuyang (26.36), Estonia's Triin Aljand (26.38), Poland's Aleksandra Urbanczyk (26.39), Brazil's Daynara De Paula (26.43) and Australia's Brianna Throssell (26.54) comprised the rest of the semifinal field.
Men's 50 free
Women's 100 IM
"I wanted to try to get as close to my personal best as possible in the heats, and I got a personal best," Allen said. "The Olympics obviously did not go to plan. But you learn more when things do not go to plan, so there is certainly a learning curve."
Lithuania's Ruta Meilutyte, who has been having herself a strong meet thus far, qualified second in 59.33 to move to 22nd in the all time rankings. That's the first time she's been under 1:00, having previously held the national record with a 1:00.65.
USA's Melanie Margalis (1:00.03), Germany's Theresa Michalak (1:00.03), Belarus' Aliaksandra Herasimenia (1:00.32), China's Zhao Jing (1:00.37), China's Chen Xinyi (1:00.45), Finland's Hanna-Maria Seppala (1:00.79), Japan's Emu Higuchi (1:00.85), Jamaica's Alia Atkinson (1:00.99), Finland's Emilia Pikkarainen (1:00.99), Great Britain's Hannah Miley (1:01.19) and Poland's Alicja Tchorz (1:01.37) placed sixth through 16th for the rest of the semifinal spots.
Men's 800 free relay
The first heat proved to be where the action was at in prelims with
Australia's Tommaso D'Orsogna (1:44.65), Jarrod Killey (1:46.52), Travis Mahoney (1:46.81) and Robert Hurley (1:43.79) won the second heat in 7:01.77 with Team USA's Garrett Weber-Gale (1:46.62), Michael Klueh (1:44.37), Matt McLean (1:45.45) and Michael Weiss (1:45.34) taking fourth overall in 7:01.78.
Women's 800 free slower seeded heats
The Chinese put up the top two times of the morning in the timed final event as Xu Danlu (8:22.88) and Zhou Lili (8:25.19) with another heat of swimmers to compete during finals this evening.