MEET OUR INSTRUCTORS

Coach Scalf started baseball at age 6 in Wilson Park Little League and played high school ball at Milwaukee Pulaski. After multiple MLB tryouts and a minor league opportunity cut short by injury, he continued competing in the Land O’ Lakes League.

In 2001, he moved to Texas and coached select teams from U8–U19, including two trips to Williamsport with his U11/12 MVP team. Since returning to Wisconsin in 2012, he has focused on coaching and private instruction, specializing in catching and hitting.

Coach Scalf’s passion for teaching and developing youth athletes is what keeps him deeply connected to the game!

Player Experience: 36 Years
Coaching Experience: 25 Years
Positions Played: Catcher / 1st Base / Utility
Highest Level of Play: Amateur
Highest Level of Coaching: College

Joey is currently a pitcher at Carroll University, where he’s studying Business Administration & Management with double minors in Analytics and Leadership.

During the summer back home in Chicago, he coaches at the Cubs Baseball Summer Camps, helping youth players develop baseball fundamentals in hitting, throwing, and fielding.

He’s passionate about developing youth athletes and teaching them the game. 

 Jeff brings over 13 years of experience in baseball coaching and program management, including more than a decade as a coach and Program President of the Cudahy-St. Francis Little Baseball Association (CSFLBA). In this role, he led player development initiatives, organized coach training, designed learning and development plans, and coached teams ranging from U8 to U14.

For the past four years, Jeff has also worked as a private coach with a specialization in pitching. His coaching philosophy emphasizes proper mechanics and strength development, while recognizing that every athlete has unique needs and learning styles.

As a father of three, Jeff understands the role sports play in a child’s growth and is passionate about guiding young athletes through the process of improvement. He is USA Baseball certified and holds Red Cross CPR certification.

 As the owner of 643 Sports Performance, I’m passionate about helping athletes become the best version of themselves — physically and mentally. With a background in collegiate track & field, four years of football and basketball experience, and participation in the Chippewa River Baseball League, I bring a diverse athletic foundation. Combined with coaching at both recreational and club baseball levels and a psychology degree from Winona State University, I offer a unique perspective that integrates athletic performance with sports psychology to design well-rounded, high-impact training programs. 

My coaching philosophy is rooted in the belief that peak performance isn’t just about strength and speed — it’s about mindset, discipline, and adaptability. At 643, I work with athletes to develop explosive power, mobility, and endurance, while also building confidence, focus, and mental resilience.

Let’s train with purpose, perform with confidence, and build the kind of foundation that lasts.