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Jacobson Hammer U16 Baseball Team


We are a dedicated team of coaches who are passionate about helping our players achieve their full potential. Meet our coaching staff below.



Head Coach

Mark Rosenman, a seasoned veteran in the world of baseball, stands as a prominent figure with over two decades of coaching experience. As the Head Baseball Coach for Maccabi Baseball on Long Island, Mark has dedicated himself to fostering the growth of the program, leaving an indelible mark on the aspiring players under his guidance.

Mark's coaching journey spans more than 20 years, during which he has not only honed the skills of countless players but also propelled many of them into successful college and professional baseball careers. His coaching philosophy goes beyond the diamond, instilling in his players not just the techniques of the game, but also the values of teamwork, discipline, and sportsmanship.

However, Mark's influence extends far beyond the coaching field. With a remarkable career as a baseball reporter that spans over 40 years, Mark has become a seasoned observer and chronicler of the game. His insights into the intricacies of baseball have been documented in several well-received books, showcasing his passion for the sport.

One of Mark's unique attributes is his firsthand experience in engaging with baseball legends. Over the years, he has had one-on-one conversations with numerous Hall of Famers, including iconic figures such as Ernie Banks, Gary Carter, Tom Seaver, Tom Glavine, Frank Thomas, Tony Oliva, and Mike Piazza. His ability to connect with both historical baseball figures and today's biggest players and managers demonstrates his profound understanding of the sport and its evolution.

Mark Rosenman's commitment to the Maccabi Baseball program goes beyond the field and the pages of his books. He has tirelessly worked towards creating an environment where young talents can thrive, ensuring that the program serves as a stepping stone for future baseball stars. His dual roles as a coach and a baseball aficionado reflect his unwavering dedication to the sport and its community.

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Assistant Coach

Danny Lackner brings a wealth of experience and expertise to his role as Assistant Coach, serving as the Director of Player Development for the Maccabi Baseball program on Long Island. With a distinguished reputation in the field, Danny's journey from a High School All-American and College & Professional baseball player to a Partner and Director of Player Development at The LI Field House showcases his commitment to the growth and excellence of baseball athletes.

A former High School All-American, Danny transitioned seamlessly from his playing career into the business and professional player development side of baseball. As a graduate of MLB Scout School in 2015, he has acquired extensive experience consulting elite baseball prospects and their families, offering valuable insights into the nuances of the game at the highest levels.

Danny specializes in private baseball training, working closely with individual players to enhance their on-field performance and achieve their development goals. 

Danny Lackner is a seasoned Assistant Coach and Director of Player Development whose passion for private baseball player development is matched by his ability to deliver results and drive success. Danny is a valuable asset to the Maccabi Baseball program and we are very  fortunate to have him on board.



Assistant Coach and Baseball Veteran

Kevin is a former Major League Baseball player and a seasoned coach with an extensive history in the sport. Baez's baseball journey began at Dominican College, where he honed his skills and attracted the attention of the New York Mets, who drafted him in the 7th round in 1988.

As a shortstop for the New York Mets, Baez made his MLB debut on September 3, 1990, and played with the team in 1990, 1992, and 1993. 

Beyond his playing career, Baez transitioned seamlessly into coaching, serving as the manager and third base coach for the Long Island Ducks. His coaching journey included a stint in the Mets organization in 2007, showcasing his commitment to nurturing talent at both the Major and Minor League levels.

Baez's influence extends to the grassroots level, where he ran baseball clinics for all ages in Bay Shore, NY at Pro Game Athletics. These clinics, designed to instill fundamental skills in young players, reflected Baez's dedication to fostering the love of the game in the next generation.

An integral part of the Ducks' 2004 championship team, Baez showcased his prowess on and off the field, earning a spot on the Atlantic League All-Star team and securing MVP honors. His contributions to the team's success continued in the 2004 playoffs, where he batted .263, playing a pivotal role in securing his first professional baseball championship.

In 2010, Baez took on the role of manager for the Long Island Ducks, guiding the team to two consecutive championships in the 2012 and 2013 seasons. His leadership and strategic acumen were evident, leaving a lasting legacy with the Ducks.

Following his successful tenure with the Ducks, Baez embraced new challenges, stepping down in 2018 to manage the Rockland Boulders of the Can-Am League for the 2019 season. With a veteran's perspective gained from 63 major league and 1,750 minor league games, Baez has demonstrated his commitment to the growth of baseball, leaving an indelible mark on the players he has coached and the teams he has led. He runs all on field practices for the Maccabi team with a strong focus on fundamentals.

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