GMX7 Weekly Wonders of Age Group Swimming – 3/4/2021

In our GMX7 Weekly Wonders of Age Group Swimming series, we celebrate swimmers of every age and experience level with age group profiles of some recent results.

Gregg Enoch, 14, Unattached (UN-IN): A high school freshman, Enoch has taken more than thirty seconds off his 500 free this season, culminating in a 4:32.44 in Indiana’s high school state prelims. Enoch’s lifetime-best was 5:04 as of January 2020. Last fall, he went 4:45 in November and 4:40 in December. Then this high school season, Enoch went 4:35 a Sections and 4:32.4 at State, showing a massive improvement trajectory at the age of 14.

Emily Hamill, 13, Unattached (UN-MA): The 13-year-old Hamill cut a full second from her 100 back at the MA NDA Championships, going 56.11. Among U.S. 13-year-olds this season, Hamill ranks #5 nationally. She also hit a career-best 51.84 in the 100-yard free.

Matthew Marsteiner, 14, New Wave Swim Team (WAVE-NC): It was a stellar North Carolina age group championships for Marsteiner, who rewrote personal bests from the 200 free all the way to the 1650 free. His biggest drop was nearly twelve seconds in the mile from 15:49.85 to 15:38.01. But Marsteiner also hit times of 9:22.73 in the 1000 (a drop of almost ten seconds), 4:33.81 in the 500 free (a drop of about 2.4) and 1:41.96 in the 200 free (a drop of just over a second).


David McCagg, World Champion swimmer and GMX7 Founder

About GMX7

Founded in 2018, GMX7 is based in St. Petersburg, Florida and is dedicated to changing the world of swimming by empowering competitive swimmers with the best aquatic resistance training devices ever created. GMX7 was founded by David McCagg, a 7-time gold medalist, former world record holder and winner of multiple national championships. The first device on the market by GMX7 is the X1-PRO. Designed by ROBRADY Engineering, it has already been the recipient of several awards including the 2020 International Design Excellence Award and the 2020 Red Dot Award for product design.


GMX7 is a SwimSwam partner. 

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Misha Fan
4 months ago

Dang how does one go from a 5:04 to a 4:32 in a year

CA Breedy
4 months ago

Well done David!

David A
4 months ago

Blake Amlicke just went a 50.4 100 back and 1:42.3 200 free as a 14 year old!

Joey Geddie
1 month ago

Now he goes 4:06 in his 400 lcm free in June 2021

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 …

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