Koki Yamamoto

Also swam for Unattached (2025–26). Best times below include every one of them.

25 events78 swims21 meetsLast raced May 17, 2026

Where Koki ranks

Official 2025–26 season: best time from Sept 1 to Aug 31, in the age group Koki was when swimming it. Short course only.

50 Breast SCY26.24

FastestField

Boys 15-16 · 2025–26 season · set Mar 2026Tap a row for the list

Cuts Checker

Include conversions

Select a time standard above to see which events you qualify for.

Best Times

Show conversions

50 Breast

SCY2 swims

BBBAAAAAAAAAA

26.24

2026-03-08

200 Breast

SCY6 swims

BBBAAAAAAAAAA2.25 to AAAA

BEST

2:03.94

2026-03-06

LCM5 swims

BBBAAAAAAAAAA6.65 to AAAA

2:28.54

2025-07-28

100 Breast

SCY10 swims

BBBAAAAAAAAAA0.62 to AAAA

BEST

56.61

2026-02-06

LCM4 swims

BBBAAAAAAAAAA2.51 to AAAA

1:07.60

2025-07-12

400 IM

SCY4 swims

BBBAAAAAAAAAA1.40 to AAA

BEST

4:10.79

2026-03-07

LCM4 swims

BBBAAAAAAAAAA4.05 to AAA

4:52.84

2025-07-11

200 IM

SCY6 swims

BBBAAAAAAAAAA1.07 to AAA

BEST

1:56.96

2026-02-06

LCM5 swims

BBBAAAAAAAAAA2.75 to AAA

2:17.84

2025-06-22

200 Fly

SCY2 swims

BBBAAAAAAAAAA2.12 to AA

2:02.41

2025-11-09

LCM3 swims

BBBAAAAAAAAAA3.00 to AAA

BEST

2:14.29

2025-07-10

500 Free

SCY1 swim

BBBAAAAAAAAAA5.61 to AA

BEST

5:04.00

2025-10-12

LCM2 swims

BBBAAAAAAAAAA4.10 to AA

4:32.29

2025-05-03

100 Free

SCY3 swims

BBBAAAAAAAAAA0.95 to AA

BEST

50.54

2025-12-07

LCM2 swims

BBBAAAAAAAAAA0.95 to AA

58.34

2026-05-17

200 Free

SCY3 swims

BBBAAAAAAAAAA3.59 to AA

BEST

1:53.28

2025-10-12

LCM2 swims

BBBAAAAAAAAAA4.03 to AA

2:09.62

2026-04-18

100 Fly

SCY1 swim

BBBAAAAAAAAAA0.30 to A

56.39

2025-11-08

LCM2 swims

BBBAAAAAAAAAA1.34 to AA

BEST

1:02.63

2025-06-20

200 Back

SCY1 swim

BBBAAAAAAAAAA6.50 to A

BEST

2:09.79

2025-10-11

LCM2 swims

BBBAAAAAAAAAA3.95 to A

2:28.94

2025-06-22

50 Free

SCY3 swims

BBBAAAAAAAAAA0.33 to A

BEST

23.92

2025-10-10

LCM2 swims

BBBAAAAAAAAAA0.04 to A

27.43

2026-05-16

100 Back

SCY2 swims

BBBAAAAAAAAAA0.52 to BB

BEST

1:01.11

2025-11-09

LCM1 swim

BBBAAAAAAAAAA2.62 to BB

1:14.61

2026-05-16

Open Koki's full profile in the app

Race-day alerts, every cut, every PB drop, and the full meet plan — on iPhone and Android.

Explore

USA Swimming time standards — 17-18 Boys

See how Koki's times rank nationally: 50 Breast 200 Breast 100 Breast 100 Breast (LCM)200 Breast (LCM)400 IM

Other Dads Club Swim Team swimmers around Koki's age: Ford Chapman Urias Del Angel Charlee McEvoy Cole Ferguson Sophia Giesecke