Masafumi Naoki
- Born
- Nov 19, 1993 (32 years old)
- Events
- 200 m · 100 m
Masafumi Naoki is a Japan sprinter, born on November 19, 1993. He competes primarily in the 100m, 200m and 400m.
His personal bests include 10.29 in the 100m, 20.44 in the 200m, 47.26 in the 400m, 39.03 in the 4x100m and 3:07.33 in the 4x400m. He is currently active on the international athletics circuit, representing Japan.
Personal best · 200 m20.44
2022 season best11.03Apr 10, 2022 · Nagai Stadium No. 2, Osaka
Personal best · 100 m10.29
As of Oct 28, 2026: 200 m 20.44 (#860 all-time), 100 m 10.29, 2022 season best 11.03 (Apr 10, 2022, Nagai Stadium No. 2, Osaka (JPN)) · 32 years old
Personal bests
WA points calculator →DisciplineResultAll-time
4x100mKumagaya 201439.03–
4x400mTokyo 20153:07.33–
60m20196.881,001 pts–
* Wind-assisted (> 2.0 m/s)
Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2022 | 100m | 11.03 | +0.2 | Apr 10, 2022 | Nagai Stadium No. 2, Osaka (JPN) |
| 2021 | 200m | 22.14 | -0.4 | Jun 1, 2021 | Michitaka Kinami Memorial Athletics Meet, Yanmar Stadium Nagai, Osaka |
| 2020 | 100m | 10.58 | -0.2 | Oct 1, 2020 | 104th Japan Championships |
| 2020 | 200m | 20.82 | -0.6 | Sep 26, 2020 | Yanmar Stadium Nagai, Osaka (JPN) |
| 2019 | 60m | 6.88 | – | Feb 3, 2019 | – |
| 2019 | 60m Indoor | 6.88 | – | Feb 3, 2019 | Osaka (JPN) (i) |
| 2019 | 100m | 10.29 | +2.8 | Jun 2, 2019 | Tottori (JPN) |
| 2019 | 200m | 20.85 | +1.6 | Jun 23, 2019 | Yanmar Stadium Nagai, Osaka (JPN) |