DMACK Development
Played in MLB, NPB, and KBO and Increased his Maximum Exit Velo by 8 MPH in 6 months
Our Products (coming Soon)
Full Remote Development
Our Full Remote Development Plan is exactly what it sounds like. We will provide a full blueprint on how get stronger, increase your exit velocity, make yourself a better fielder, improve your approach, and make your mental side of the game stronger. Having real tools will give you greater options. This program mirrors exactly what David did during his ACL rehab in 2019 increasing his maximum exit velocity by 8 MPH within a year, which in turn got him to the MLB.
Swing Analysis/Assessment
Send us a video of your swing from the side and front if possible. We will take a look and set up a time for a half hour call, analyzing your swing. We will go through some different approach ideas and some mechanical ideas that could help your swing based on the issues you are currently having. We will also provide you with drills that will help.
EBOOK From Average Joe to the Show
About David MacKinnon
David grew up in Easton MA. He played 4 years of varsity baseball and soccer before continuing his career in both sports at the University of Hartford. MacKinnon broke the all time hits record at Hartford and was named the America East Player of the year in 2016. He was also named to the First Team academic All American team for the 2016 and 2017 seasons. He was drafted by the Los Angeles Angels in the 32nd round, 955th overall. He made his Major League Debut on June 18th, 2022. Following the conclusion of the 2022 season David elected free agency and signed with the Seibu Lions of the NPB for the 2023 season. In 2024, MacKinnon decided to accept a contract playing in the KBO for the Samsung Lions and made the All Star team. He played winter ball in Puerto Rico from November 2024 to February 2025 in an effort to make a comeback to stateside baseball. Unfortunately he did not sign a contract before the 2025 season and has decided to continue his coaching career. He currently resides in Houston with his wife and two sons.In 2019, MacKinnon tore his ACL two weeks into the season. He was at a crossroads. He battled the decision to potentially retire or to rehab and fully dive into the biomechanics of the swing and how the body and the sequence of the swing works. His wife Jordan, convinced him to give it one more go. He studied some of the best hitters in the big leagues, specifically Mike Trout and Vlad Guerrero Jr. He analyzed why their swings were so much more consistent and powerful than his swing. He realized the key to becoming more consistent and more powerful was to find a way to hold his posture and create a lot of ground force. This discovery jump started his rise to the big leagues. During his rehab, he increased his exit velocity by 8MPH in less than a year which helped him increase all his power numbers eventually getting him to the big leagues.