“Striving for excellence is what drives me. I’m passionate about supporting our clients in finding unique ways to maximize their mental performance in ways that feel authentic to them. That’s why I started Courtex in the first place. When I was a collegiate player, I lacked the tools to consistently utilize my mental potential to my advantage. Instead, I just relied on trying to outwork everyone--and that wasn’t enough of an edge. I want more for you. Whether you’re a player, coach, or executive, my goal is to help you excel in your mental game and feel connected in your performance and life.”

Rainer, who founded Courtex in 2013, is the lead mental performance coach for our NBA and FIBA clients and also oversees many of our daily business operations. As a former collegiate player, skills trainer, and youth coach, Rainer understands the game from different angles. He has worked closely with numerous high level pros and prospects, as well as with some of the top coaches and executives in the game. 

Additionally, he has provided NBA Pre-Draft consulting services to multiple organizations, including the Miami Heat, Utah Jazz, and Milwaukee Bucks. Outside of basketball, Rainer has consulted with clients in numerous other sports, up to the Olympic level. A native of Germany, he is fluent in both English and German. 

Certified Mental Performance Consultant (CMPC) | Association for Applied Sport Psychology (AASP) | Since 2013

PhD in Kinesiology | Sport Psychology & Motor Behavior Specialization | University of Tennessee | 2011

MA in Counseling Psychology | Frostburg State University | 2008

BA in Behavioral Sciences | Psychology Concentration | Coaching Minor University of Maine at Machias | 2004

"I believe that talent beats hard work when hard work doesn't understand their talents. Because of that, I love helping our clients discover who they are so that they can use that knowledge to excel in whatever way matters to them. Every person has an amazing capacity to learn but we do not all learn in the same way. My goal is to blend my expertise with your talents to develop a plan specifically designed to get to where you want to go. I truly believe that no matter what makes you tick, we can make it work!"

Dave is in charge of Courtex's assessment and research operations, and provides mental training services to select clients. As a former collegiate athlete and coach, and current college professor, Dave understands the mental game in both theory and application. He has worked closely with players, coaches, and executives across the NBA, MLB, and NCAA. 

Additionally, he has provided NBA Pre-Draft consulting services to multiple organizations, including the Miami Heat, Utah Jazz, Philadelphia 76ers, and Milwaukee Bucks. A native of St. Louis, Missouri, Dave currently lives in Grand Rapids, Michigan.

Assistant Professor of Exercise Science | Grand Valley State University | Since 2015

PhD in Kinesiology | Sport Psychology & Motor Behavior Specialization | University of Tennessee | 2012

MS in Exercise & Sport Sciences | Sport Psychology Concentration | Ithaca College | 2007

BA in Communication | William Jewell College | 2003

"The mental game is about creating a life or performance that feels good on the inside, not just one that looks good on the outside. Through my experience as a player and coach, I discovered that the mental game is the difference between good and great. In my work, I focus on the development of the whole person to enhance performance on and off the “court”. My goal is to help clients fine-tune, train, and optimize the mental skills they already have and develop new ones as necessary."

Aren is a mental performance coach for Courtex athletes and coaches. As a former collegiate basketball player and coach, Aren developed significant proficiency in developing mental and physical skills, techniques, and strategies for individual and team play. He has consulted largely with players across the NCAA, and high school basketball levels, and has also been working with Courtex pro athletes. While in pursuant of his CMPC certification, he completed his research review on the Holistic Development of Amateur Athletes. 

 Additionally, Aren has coached clients from many other sports and professions, including golf, football, soccer, cross country, and educators. He also offers expertise in social media and brand development. A native of the San Francisco Bay Area, California, Aren currently lives in Atlanta, Georgia.

Certified Mental Performance Consultant (CMPC) | Association for Applied Sport Psychology (AASP) | Since 2023

Doctor of Psychology (PsyD) Candidate | Sport & Performance Specialization | University of Arizona Global Campus

MA in Applied Sport & Performance Psychology | Holy Names University | 2022

BS in Mass Communication | University of West Georgia | 2015

“Championing happiness, progress, and success is what drives me. I believe in being an advocate of the performer. Whether supporting performers in recognizing themselves as the ultimate system or helping them refine through exploration, my goal is to help individuals leverage their mental game for greater success (as defined by them).”

Mo is a mental performance coach for Courtex. She is a former collegiate basketball player and a member of the United States Women’s National Handball Team, in addition to having experiences as a researcher, coach, and professor. Mo deeply understands the mental dynamics, physical demands, and the impact of team culture within competitive sports. 

Mo has worked extensively with diverse populations, including military personnel, Major League Baseball, NCAA teams, and youth athletics. Additionally, she offers expertise in behavior change, resilience building, and return from injury processes. A native of Philly, Mo currently lives in the San Francisco Bay Area. 

PhD in Kinesiology | Sport Psychology Concentration | Auburn University | 2022 

MS in Exercise Physiology | Auburn University | 2018  

BS in Kinesiology & Exercise Science | Nova Southeastern University | 2016 

“Helping others connect the dots, experiment, and think outside the box fuels my motivation. I love encouraging my clients to learn new things about themself, strive for more, and tell their story from a strength’s based and growth mindset. Whether you’re an entrepreneur, executive, or new manager, my goal is to help you develop and fine tune your mental game, leadership skills, and professional performance within and outside of business. As a coach and organization development practitioner, I genuinely believe the micro affects the macro and sometimes that means taking baby steps to make larger leaps towards discovering one’s actualized potential.”

Sam is in charge of Courtex’s strategy and business operations, and provides executive, leadership, and professional coaching services to select clients. Sam has worked with legal, medical, technology, association management, start-up, sport coaching, sport agency, and education professionals in an organization and talent development capacity. As a former business professional leading teams around the globe, Sam understands the mental game within and outside of business settings. She has worked closely with professionals ranging from managers to CEOs across varying landscapes and leads Courtex’s leadership development assessments and workshops. 

Additionally, she has provided mentorship program development as well as business operation consulting services to global organizations, including those that serve law firms, as well as corporate, government, and technology professionals. Sam also offers expertise in creative  communications and presentation as well as leadership and team dynamic assessments. A native of Westfield, WI, Sam currently lives in Charlotte, North Carolina. 

MS in Talent & Organization Development | Queens University of Charlotte | 2022

Executive Coaching Certificate | Queens University of Charlotte | 2021

Certified Facilitator | Actualized Performance Cycle | Leadership & Team Dynamics | William Sparks & Associates | 2021

BA in Psychology | University of Wisconsin - Milwaukee | 2011

“I am passionate about helping athletes reach their peak performance by harnessing the power of the mind. I believe in order to optimize performance, we must appreciate the individual as a whole. Intentional identity development alongside one's athletic journey is my specialty when working to help strengthen my clienteles’ mental game and emotional well-being. I strive to emphasize that success is not solely determined by physical prowess but also by one’s mental game on and off the court. My goal is to not just empower individuals within their athletic careers, but also to help them thrive in their life beyond sports.”

Eshe is a mental performance coach for Courtex athletes and coaches. As a former collegiate Track & Field athlete and coach, Eshe understands the necessity of integrating mental performance training to help athletes achieve success. She has worked primarily at the youth, high school, and collegiate levels to support athletic performance. 

Eshe specializes in working with individuals within softball, tennis, as well as track & field. Eshe also offers expertise in athlete identity, career transitions, and life after sports. She believes in encouraging her clients to embrace a holistic view of self by actively engaging in multi-faceted interests alongside their sport career. A native of Chicago, IL, Eshe currently lives in the south suburbs of the windy city.

MS in Kinesiology | Performance, Sport, & Exercise Psychology Specialization | University of Illinois - Chicago | 2023

BA in Kinesiology | Exercise Science Specialization | Western Illinois University | 2015

Certified EXOS Performance Specialist | Since 2015