Kohei Yamamoto set a new national record en route to winning the men's 1,500-meter freestyle on the second day of the Japan Open on Friday.
Yamamoto touched the wall at Tokyo Tatsumi International Swimming Center in 14 minutes, 54.80 seconds in the meet, which doubles as a qualifier for the Asian Games in Incheon, South Korea. The continental championships are set to begin on Sept. 19.
Satomi Suzuki bettered her own national mark by 0.26 second in winning the women's 50 breaststroke in 31.04.
Miho Takahashi captured the women's 400 individual medley title in a national record time of 4:35.69. She rewrote Yasuko Tajima's mark of 4:35.96 set at the 2000 Sydney Games.
Yamamoto and Takahashi both cleared the qualifying standard to be added to the team going to the Asian Games.
Ryosuke Irie won the men's 100 backstroke in 52.69 followed by runner-up Kosuke Hagino in 53.39.
