Next Level Nine
Unleashing Potential. Building Resilience. Elevating Games.
About Us
Next Level Nine is a modern player development platform dedicated to supporting athletes in achieving their goals while maintaining balance—physically, mentally, and strategically. We combine an elite player development program, crafted from advanced analytics data, with mindset coaching to help players maximize performance, build resilience, and develop leadership skills both on and off the field.
As a woman-led platform shaped by experience in leadership training, business and sports analytics, player development, and emotional intelligence, we bring a unique and valuable perspective to the game. We challenge traditional approaches while embracing innovation, leadership, and mental performance as key factors for success.
Our goal is to empower athletes and decision-makers with the best resources, analytics, and training strategies to help them reach the next level—both on and off the field.
Our Mission
At Next Level Nine, we believe elite athletes are developed from the inside out—where mindset, preparation, and purpose go hand in hand with physical mechanics.
Our mission is to cultivate resilient, high-performance leaders who thrive under pressure, lead with integrity, and compete with intention. We design individualized growth plans rooted in mental performance, intentional habits, and a culture of winning mindset, preparation, and leadership. At Next Level Nine, we support athletes throughout their development journey—not just to train harder, but to train smarter, think sharper, and grow into elite competitors and leaders—on the field and beyond.
Next Level Nine is helping athletes redefine the game with a fresh, modern approach—leveraging advanced scouting tools, detailed reports, and analytics to craft sustainable, individualized player development strategies. We meet players exactly where they are, offering tailored support grounded in both expertise and passion, and delivering cutting-edge evaluations, data-driven insights, and strategic development plans.
Meet Our Founder
Born and raised in the Dominican Republic, Liza Osterdock’s love for baseball runs deep. Baseball isn’t just a game in the DR—it’s a way of life. From a young age, she was drawn to the mental aspects, the strategy, excitement, and spirit of the sport. In 1998, she moved to California, holding on to her passion for the game and a vision to one day make a meaningful impact—both on and off the field. That day has finally come.
Hi, I’m Liza—and I’m the founder of Next Level Nine. Thank you for being here.
I launched this platform to showcase how I bring a fresh, modern approach to player development—rooted in my background in technology, advanced baseball analytics, scouting, and compassionate leadership. I believe elite athletes are built from the inside out: through intentional training, mental resilience, and data-informed strategy. My mission is to bridge the gap between traditional scouting and cutting-edge analytics—ensuring the human side of the game works alongside advanced tools to help players become confident competitors and high-performing leaders.
As a bilingual (English and Spanish) woman transitioning from a 20+ year career in high-tech into a male-dominated industry, I also hope to inspire others—especially women—to pursue their own baseball dreams. Whether it’s working for an MLB team, scouting talent, or building tools to help athletes thrive—there’s space at the table for all of us. I aim to be a trailblazer for many.
Now based in Alamo, CA, I’m a proud mom to a college-aged son. When I’m not breaking down metrics or watching games, I stay active hiking, gardening, biking, and working out—and, of course, learning about the latest trends in baseball technology.
Beyond the diamond, I also founded The Liza Maribel Foundation, a 501(c)(3) nonprofit dedicated to empowering at-risk youth, underserved communities, and women recovering from abuse. Through scholarships, education, and essential support, our mission is to create opportunity and uplift the next generation—values that mirror everything we do at Next Level Nine.
Let’s raise the standard. Let’s build stronger athletes. I invite you to be part of the movement: Unlocking Potential. Building Resilience. Elevating Games.
“Player development is more than drills and metrics—it’s about unlocking human potential.”
My Commitment to Player Development
Baseball has always been the game I love—and the foundation for how I lead, grow, and serve. My journey—overcoming personal and professional challenges, building from the ground up, and leading with intention—taught me that this work carries a deep responsibility: to develop high performers and strong, confident leaders.
I’ve invested in specialized training through Sports Management Worldwide in Baseball Scouting & GM, Baseball Player Development, and Baseball Analytics. And also earned certifications in Rapsodo Pitching & Hitting as well as SABR Analytics (currently taking SABR Advance Analytics and Introduction to Baseball Programming). These tools help me evaluate talent, track progress, and design individualized development plans using industry-leading data and modern tech.
In addition to physical and performance-based development, I’ve also studied Strategic Coaching, Mental Performance, and Neuro-Linguistic Programming (NLP)—training that allows me to support players emotionally, mentally, and physically. This holistic lens helps me build trust, enhance communication, and foster environments where athletes grow beyond the stat sheet.
I bring a culturally aware, growth-oriented perspective—especially when mentoring international Latin players who are adjusting to new systems, languages, and expectations. I lead with empathy, clarity, and structure—offering honest feedback and consistent mentorship rooted in high-performance habits.
Whether I’m serving as a player development assistant, bilingual scout, or adaptive-skills coach, I bring the same values to the field every day: prepare thoroughly, coach with compassion, and align data with heart. I’m here to help athletes unlock their potential, integrate advanced tools, and succeed on and off the field—because development isn’t just about skill. It’s about who you become in the process.
Baseball Advance Education & Certifications
Over the past year, I’ve made deliberate, measurable progress to strengthen my skillsets and prepare for a career in professional baseball—building deeper expertise in player evaluation, expanding technical skills, and growing meaningful relationships in the industry.
Baseball Analytics
Analyzing players based on data.
Baseball GM & Scouting
Recognize character and raw talent.
Baseball Player Development
The Play Big Mental Game.
Rapsodo Baseball Pitching
This certification strengthens my ability to leverage real-time data and video to improve pitching performance and support athletes more effectively.
Rapsodo Baseball Hitting
This achievement expands my ability to analyze exit velocity, launch angle, and spin metrics to better evaluate hitting performance and maximize player development.
SABR Analytics
I can now think critically in regards to baseball historical eras of analytics, descriptive vs. predictive data, metrics vs. statistics, key hitting, pitching, and fielding terms and practical player comparisons.
Recommendations Letters
Here are some of the recommendations from previous high-tech CEOs and from former Professional MLB Players and Managers.
Hensley Meulens – Letter of Recommendation
Former Hitting Coach – Colorado Rockies – 2023 – 2025
Former SF Giants Hitting Coach – 2010 – 2017 | Bench Coach – 2018 – 2019
World Series Champion 2010 | 2012 | 2014
Nelson Cruz – Letter of Recommendation
Special Advisor for Baseball Operations for Major League Baseball
7× MLB All-Star | 2011 ALCS MVP | Former MLB Player (2005–2023)
Veteran Leader and Advocate for Inclusion in Baseball
Steve Semelsberger – Letter of Recommendation
CEO, Director, Advisor, Investor, Builder.
Founder & CEO – AlderPartners
Former CEO – Testlio Inc. – 2018 – 2025
Next Level Nine is Helping Athletes Redefine their Mental Game
Our Business Approach
At Next Level Nine, we believe elite player development requires a holistic and personalized strategy. We combine advanced scouting tools, analytics, and mental performance systems to meet players exactly where they are—elevating every aspect of their game with precision and purpose.
Through a system that emphasizes:
Positivity & Mental Toughness
We rebuild confidence and equip players with the tools to reset, refocus, and rise under pressure.
Development & Growth Planning
We track progress, define role-specific goals, and ensure every athlete understands their value and trajectory.
Confidence Conditioning & Visualization
We integrate daily mental reps—visualization, breathing, and focus drills—into performance routines.
Offseason & In-Season Personalization
We tailor plans that maximize strength, refine mechanics, and sharpen cognitive readiness.
Player-Centric Culture
We create a supportive, intentional environment where adversity fuels growth and every rep has purpose.
“Baseball is 90% mental and the other half is physical.”
— Yogi Berra
Our framework reflects our commitment to player-first, data-informed, and mindset-driven development.
At Next Level Nine, we don’t just coach talent—we build resilient leaders, complete competitors, and confident young men prepared to succeed both in baseball and in life.
The Core Foundations of Our Development Services
Each core area is designed to support long-term player growth, mental strength, and high-performance leadership—equipping athletes with the tools to build grit, embrace adversity, and thrive both on and off the field.
Individualized Player Development Plans
Every athlete is unique. No one-size-fits-all plans.
Every athlete deserves a plan tailored to their unique strengths, position, and progression goals. Our custom development plans use biomechanics, performance data, and cognitive profiles to accelerate targeted growth and readiness.
Mental Performance & Resilience Coaching
Build the mind. Unleash potential.
From breathing techniques to confidence conditioning, we train athletes to master their mindset, stay composed under pressure, and rebound stronger from adversity—on and off the field. These skills keep players focused under pressure and confident in big moments.
Leadership Planning & Personal Development
Lead with purpose. Impact the game.
Great players lead with intention. We help athletes develop self-awareness, emotional intelligence, and leadership habits that earn respect in the clubhouse and set the tone for team success. We prepare players to inspire teammates and strengthen team culture.
Advanced Analytics & AI-Driven Insights
Gain insights. Compete with clarity.
We pair traditional baseball instincts with modern analytics, giving athletes access to pitch tracking, swing metrics, and predictive modeling that sharpen decision-making and unlock performance.
Holistic Player Growth & Progression
Build resilience. Elevate your game.
True development includes more than mechanics. Our holistic system integrates physical training, mental preparation, and emotional resilience to grow players into well-rounded, purpose-driven athletes.
High-Performance Culture & Mental Toughness
Build grit. Sustain the culture.
We help players embrace discipline, adopt team-first leadership, and perform with confidence. It’s not just about competing—it’s about thriving in pressure moments and leading with purpose.