Business Details
Premier Baseball Training in Englewood, CO
Slammers is a premier baseball training organization dedicated to developing players of all ages and skill levels. Our staff combines decades of professional playing and coaching experience with state-of-the-art facilities to deliver personalized instruction, competitive teams, and comprehensive programs. We focus on holistic athlete development, emphasizing technical skills, physical conditioning, and mental resilience.Our track record of placing players in collegiate and professional leagues underscores our commitment to excellence. With personalized training, national exposure, and a supportive community, we empower athletes to achieve their highest potential both on and off the field.
Services
Private Lessons
Youth Select Teams
Strength Training
College Recruitment
Summer Select Teams
Arm Velocity Program
Catching Clinics
Tunnel Rentals
Performance Analytics
Team Training
Highlights and features
- Our staff has 70+ years of combined professional playing and coaching experience.
- We offer personalized 1-on-1 instruction tailored to individual skill development.
- Our athletes have secured placements in 100% of NCAA conferences through college recruitment support.
- We provide access to state-of-the-art indoor training facilities year-round.
- We maintain a proven track record of developing professional and collegiate athletes.
What people say
Improved batting averages
Personalized instruction
College scholarship placements
Professional expertise
Positive environment
Services
Private Instruction
Personalized baseball training sessions focusing on pitching, hitting, and fielding techniques. Our expert coaches deliver tailored feedback to address individual mechanics and performance goals. Athletes receive dedicated attention to refine skills and build confidence through structured drills and real-time adjustments.
Youth Select Teams
Competitive tournament teams for players aged 7-14. Programs emphasize skill development, teamwork, and game strategy in a structured environment. Participants gain exposure through regional and national competitions while receiving professional coaching and equipment.
Arm Velocity Program
Specialized training combining weighted ball exercises and biomechanical analysis to maximize pitching power. The program targets strength development and throwing efficiency for pitchers seeking measurable performance improvements at all levels.
College Recruitment Support
Comprehensive guidance for navigating the college baseball recruitment process. Services include video production, profile optimization, and direct coaching connections to help athletes secure scholarship opportunities at NCAA and NAIA institutions.
Strength Training
Customized strength and conditioning programs for baseball-specific fitness. Training focuses on power development, mobility, and injury prevention through supervised weightlifting, agility drills, and sport-specific movement patterns.
People
Mark Holzemer
Owner & President
Former MLB pitcher with 15 years of professional experience. Co-owner of Slammers since 2002, providing private instruction to over 8,000 athletes. Associate scout for the Kansas City Royals and former collegiate All-American.
Billy Martin
Owner & Instructor
Former professional hitter with 8 years of minor league experience. Holds a 0.285 career batting average with 94 home runs. Combines kinesiology expertise with NSCA-certified training to develop hitting and fielding skills for all age groups.
Clint Zavaras
Owner & Pitching Coach
MLB veteran and pioneer of biomechanics-based pitching instruction. Developed the Arm Velocity Program and has delivered over 20,000 private lessons. Former Colorado high school player of the year and Olympic team representative.
Bailey Collins
Strength Coach
Former D2 All-American pitcher with a master's degree in exercise science. Specializes in athlete development programs for amateur and professional athletes across multiple sports at Slammers Performance.
Matt Pajak
Performance Director
Former USA Baseball program director with expertise in data-driven athlete evaluation. Co-founded Loden Sports to measure athletic performance metrics and consults with MLB teams on prospect analysis.
Questions
What age groups does Slammers Baseball serve?
We offer programs for players aged 6 through high school with specialized training for youth and advanced players.
Do you offer private lessons for specific baseball skills?
Yes, we provide 1-on-1 instruction for pitching, hitting, catching, and fielding techniques with professional coaches.
How can players try out for competitive teams?
Tryouts are held annually for Youth Select and High School teams. Participants are evaluated on hitting, pitching, and fielding skills during week-long assessments.
What college recruitment support do you provide?
Our staff offers video production, profile optimization, and direct connections to college coaches through our established network of NCAA contacts.
Are facility rentals available for team practice?
Yes, we offer tunnel rentals for private lessons, team practices, and group training sessions with advanced booking.
Do you have strength and conditioning programs?
Our Performance Division provides customized strength training, agility drills, and sport-specific conditioning for athletes at all levels.
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