Our team

  • Julia HiemstraDirector - Friendship Rec Center (AU Park)

    Coach Hiemstra is one of our most organized and professional coaches.  She is Director of the Friendship Rec Center location (AU Park).

    Julia (University of Vermont ’19) brings energy, high character and outstanding teaching skills to the field everyday.  She is organized, great listener and treats folks with respect and courtesy.  Julia oversees the day to day administration and our Coaches in Training program.  

    Julia recently spent time visiting an orpanage in Tanzania and has a strong commitment to social justice.

    She enjoys running, yoga, cooking and reading.

  • Brian McCarthyCo-Director - Brooklyn

    Brian is a teachers teacher.  He earned a degree from SUNY Oswego and a Master’s Degree in Education from Fordham.  A positive and upbeat instructor, Brian finds the good in people and brings energy and a positive mental attitude every day.  He is a teacher at Millenium High School in Park Slope and also serves as head coach of the women’s basketball and softball teams.  He lives with his wife Jasmine in Brooklyn.

  • Daniel WhiteCo-Director - Brooklyn

    Dan made his debut with Home Run Baseball Camp in Washington at age 4.  He is one of our most experienced coaches.  He is currently a teacher at The Hewitt School in Manhattan and lives in Brooklyn.

    He was offered a spot on our staff at age 13 and didn’t disappoint. He starred on the diamond for the Sidwell Friends School in Washington, DC and rose the ranks at Home Run with diligence, optimism, kindness, competitive fire and preparation. Dan is a technically sound teacher who easily blends multiple teaching styles depending on his pupils.

    Dan pitched for the Kenyon College Lords where he earned All League honors in addition to captaining the squad during his Senior slate. He earned a degree with honors in American Studies.  Dan has a Master’s degree in Education from Bank Street, here in New York City.  

  • Brian FriedmanAssistant Director – Brooklyn
    Brian has been with Home Run Baseball Camp since it’s inception in Brooklyn in 2010.  He was one of Coach McCarthy’s first hires. Brian is a respected community leader among players, parents and his coaching peers.
    Brian, a Brooklyn native, graduated from James Madison High School and then Queens College where he captained both baseball teams. He teaches Health & Physical Education, and is also the Athletic Director and Varsity Baseball Coach at Millennium Brooklyn High School which is an academically competitive, screened school in Park Slope, Brooklyn.
    Brian has a Bachelors Degree in Physical Education, a Masters Degree in Sports Management, and an Advanced Certificate in Disaster Management. He also has extensive experience in teaching and supporting students with special needs, especially children with Autism Spectrum Disorders.
    Brian is an avid reader, which comes as no surprise as his wife Samantha, is a High School English teacher.  She is also one of the lead on site administrators for our camp in Brooklyn. They have traveled several times with Home Run Baseball Camp’s Family trip to the Dominican Republic in February. They reside together in Park Slope.
  • Innes McKaySenior Coach - AU Park

    Innes has been player and coach at HRBC for over 11 years, debuting as a hard hitting four year old. Innes oversees our older groups and is a dedicated student athlete in his own right. He played varsity ball at Wilson HS and then took a gap year in Consuelo, a small town just outside San Pedro de Macoris in the Dominican Republic. He played in Julio Franco’s developmental program, coached a youth team and helped the Grey Sisters of the Immaculate Conception with their programs of social uplift. Innes is a freshman on a baseball scholarship at Lurleen B. Wallace Community College in Andalusia, Alabama. He plays for Steve Helms, a widely respected college coach.


  • Sam HartAssistant Director - AU Park

    Coach Hart is one of our most talented and respected coaches.  Sam has been a part of Home Run Baseball Camp as a player and coach for over 23 years – making his debut as a big hitting 5 year old.  Sam is a graduate of Sidwell Friends School where he was an all league and all city infielder his senior year.  He went on to play club baseball for four years at Wake Forest University where he graduated with honors with a degree in Political Science.  He then earned a Master’s degree from the University of Orgeon in science, educational leadership and literacy.  Sam is currently a full-time teacher at the St. Patrick’s school in Washington, DC. Sam and his girlfriend, Kylie, are avid travelers and outdoor enthusiasts.

  • Parker BrownSenior Coach - AU Park

    Parker is in her fifth year with Home Run Baseball Camp.  She is a talented and high character teacher who blends technical instruction with genuine encouragement.  Parker is a Senior at Iona College and plays varsity lacrosse.  She is an avid reader and enjoys travel and sports.

  • John McCarthy
    John McCarthy, a.k.a Coach Mac, is a native Washingtonian and a product of the DC Public Schools and Police Boys and Girls clubs. He is a nationally renowned youth baseball coach and educator who has spent the past 24 years creating opportunities for children in Washington, New York and Dominican Republic in critically acclaimed youth baseball and literacy programs he has created. John’s a motivator’s motivator who is a sought after speaker to companies, organizations, teams and events. He has been invited to speak and coach all over America and overseas in such places as Augsburg, Havana, The Hague, Paris, San Pedro de Macoris and Tokyo. After graduating from Wilson High School, John received no interest from college baseball. He walked on at the University of South Alabama and later played at Enterprise JC (AL) and Troy University (AL). He earned a scholarship by his sophomore year and was chosen as a tri-captain for his senior year. He was voted MVP by his teammates at Enterprise, threw a no-hitter and set a school record by not giving up a single home run his junior year at Troy. Three seasons his teams were ranked in the top 15 and twice played in the NCAA regionals. He set league records playing for Utica in the Northeast Collegiate Summer League for complete games and innings pitched. Five of his college teammates went on to play in the big leagues. After earning a degree in broadcast journalism, he signed a free agent contract with the Baltimore Orioles and played for their rookie league team in Sarasota. In 1994, John came back to his hometown and laid the groundwork for his career as an educator and coach. He returned to his alma mater, Wilson High School, and began teaching a course called Alternatives to Violence on the adjunct faculty, which explores the successes of such Hall of Fame peacemakers as Mandela, King, Day, Gandhi and Schweitzer. In 1998, John was honored with the Ray A. Kroc Teacher Achievement Award for the Washington area. John is the founder of Home Run Baseball Camp, a unique and well-loved baseball program in Washington and New York City. Now thriving in its 24th year, HRBC offers programs year round in Washington and New York City. Thousands of young players have trained with Home Run Baseball Camp.  A testimony to John’s leadership and values is the fact that a majority of coaches on staff are themselves former players. In 1994, John blended his passion for coaching and his commitment to education and created Elementary Baseball, an after school literacy and baseball program for boys and girls ages 6-12 in Washington DC’s Shaw neighborhood. With encouragement from early supporters DC Superior Court Chief Judge Eugene Hamilton and DC Court of Appeals Chief Judge Annice Wagner, more than 80 court employees – including 15 judges – volunteered as mentors to the youngsters in the program. In 1997, the US Department of Justice funded Elementary Baseball and named it a Pathways to Success program. To date, Elementary Baseball has helped more than 600 students and recruited over 700 volunteer tutors from area high schools and colleges. It has served as a model for DC’s own Field of Dreams program and the University of Notre Dame’s literacy program, “Teamwork for Tomorrow.” In 1999, John joined forces with former Major Leaguer Pepe Frias and educator Sister Lenore Gibb (Grey Sisters of the Immaculate Conception) to start Beisbol y Libros in a small town called Consuelo in the Dominican Republic. A co-ed after-school program, Beisbol y Libros had 400 kids enrolled ages 5 – 15.  Beisbol y Libros was the first program of its kind in the baseball-loving Dominican Republic. John has written for National Catholic Reporter, was a contributing editor for the Sports Illustrated Pitching Book Series and recently contributed to the book What Do You Stand For? (Jim Lichtman, Scribblers Ink). He is a frequent speaker around the country on service and leadership to schools, companies and organizations. Visits include Brown University, Howard University, Georgetown University, George Washington University, American University, Yale University, Greenwich Country Day, WH Council ES (Satchel Paige and Hank Aaron’s alma mater), All for One gang prevention program in California, The American Psychiatric Association annual convention, Greenpark Financial, Fannie Mae and The Fulbright Scholarship Dinner. John was featured in the documentary “A Season in the City” and wrote and directed the film “Bandit,” which premiered July 31, 2008 at the Avalon Theatre in Washington. John has been profiled in Time, Newsweek, Sports Illustrated, The Wall Street Journal, Education Week and on the Today Show, NPR, CNN, Univision, Voice of Americaand Nightline. In 1998, John was named by MTV as one of America’s top community leaders under 30. In 2000, Chief Judge Eugene N. Hamilton awarded him the D.C. Superior Court Medal of Excellence. In 2001, John was named an Irish American of the Year. John and his wife live in Washington.