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Koki MASUI
400mH
 Japan
Born15 MAR 2004 (21)
Koki's code14959698
Current World Rankings
#728 Men's 400mh
Personal bests
resultResult
52.02
dateDate
15 JUN 2024
scoreScore
1032
competitionCompetition & venue
Lemon Gas Stadium, Hiratsuka (JPN)
resultResult
3:13.42
dateDate
08 AUG 2023
scoreScore
998
competitionCompetition & venue
Hokuroku Park Athletic Field, Fujiyoshida (JPN)
resultResult
22.38
dateDate
30 OCT 2022
scoreScore
874
resultResult
49.88
dateDate
25 SEP 2022
scoreScore
865
competitionCompetition & venue
NITTAIDAI Athletic Stadium, Yokohama (JPN)
* Not legal
Season’s bests (2025)
* Not legal
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