Dolfin Swim of the Week: Mizunuma’s 51.25 in 100 Fly

Disclaimer: Dolfin Swim of the Week is not meant to be a conclusive selection of the best overall swim of the week, but rather one Featured Swim to be explored in deeper detail. The  Dolfin Swim is an opportunity to take a closer look at the context of one of the many fast swims this week, perhaps a swim that slipped through the cracks as others grabbed the headlines, or a race we didn’t get to examine as closely in the flood of weekly meets.

Last week, Japanese 23-year-old Naoki Mizunuma hit the 4th-fastest time of anyone in the world this season in the 100 fly.

A time of 51.26 was a drop of two tenths from Mizunuma’s previous best time. And though the 2019-2020 season was severely disrupted by the worldwide coronavirus pandemic, Mizunuma moves to #4 in the world behind only world record-holder Caeleb Dressel of the United States, Shinnosuke Ishikawa of Japan, and Kristof Milak of Hungary.

2019-2020 LCM MEN 100 FLY

View Top 46»

Last season, Mizunuma was Japan’s fastest 100 flyer, going 51.43 at the Japan Champs in April and making World Championships semifinals. But his time ranked just 13th worldwide.

Mizunuma’s swim sets him up for a big summer of 2021 showing in front of a home crowd – assuming the now-2021 Tokyo Olympics do happen.

His time drop also bodes well for Japan’s men’s medley relay, which was 4th last year at Worlds, but still 2.5 seconds out of medaling in a field where the top three teams (Great Britain, the United States, and Russia) swam away from the rest of the teams with ease.


About Dolfin Swimwear

Dolfin Swimwear represents quality and value. We are committed to supplying our customers with a durable swim suit and an affordable price. We also will continue to be the innovaters for fun and unique practice/training suits which gives swimmers something to smile about…even during grueling workouts.

About Dolfin’s Tech Suit LightStrike

LightStrikeTM was developed after years of research in biomechanics, active drag analysis, fabric innovation, and compression analysis. This new FINA approved suit is supported by Dr. Genadijus Sokolovas, PhD in Biomechanics and former Performance Director with USA Swimming and Styku® 3D Biomapping Engineering.

Visit Dolfin to learn more.

Instagram @DolfinSwimwear

Twitter: @DolfinSwim

Facebook: DolfinSwimwear 

Dolfin is a SwimSwam partner.

Leave a Reply

Notify of
Inline Feedbacks
View all comments

About Jared Anderson

Jared Anderson

Jared Anderson swam for nearly twenty years. Then, Jared Anderson stopped swimming and started writing about swimming. He's not sick of swimming yet. Swimming might be sick of him, though. Jared was a YMCA and high school swimmer in northern Minnesota, and spent his college years swimming breaststroke and occasionally pretending …

Read More »