Coach Daniella Reidmiller is the founder and owner of Tennis Unbounded, where her passion for tennis extends beyond developing players to supporting coaches, strengthening programs, and creating more opportunities for people to experience the sport.

Born in Lima, Peru, Daniella began playing tennis at a young age and competed in club and national junior tournaments before being recruited to play NCAA Division II collegiate tennis in the United States. Today, she brings more than 30 years of experience in the sport to her work as a coach, educator, and advocate for tennis development.

As a Certified Professional, Coach Reidmiller combines technical and tactical instruction with her background in behavioral psychology to create an engaging and thoughtful approach to player development. She has coached players of all ages and levels, from first-time beginners to competitive junior athletes and adults, with an emphasis on developing confidence, leadership, and skills that extend beyond the tennis court.

Daniella also serves as the Head Coach of the Buena High School Boys Tennis Team, where her leadership and commitment to developing both players and programs have earned her recognition as the 2024 Buena High School Coach of the Year and the 2025 USTA Southwest High School Coach of the Year.

Her commitment to professional growth and advancing opportunities for women in tennis led to her selection for the inaugural USTA Coaching Women in Tennis Cohort, where she connected and collaborated with women coaches and leaders from across the country.

Through Tennis Unbounded, Daniella is now expanding her work to support high school and community tennis coaches, who want practical guidance for building stronger, more sustainable programs. Her services include coach consulting and mentorship, program-development support, educational resources, digital coaching tools, and guidance for coaches navigating the challenges of building and growing their programs.

She is also an active member of the USTA Southern Arizona Advisory Council and the Sierra Vista Community Tennis Association and remains deeply committed to expanding tennis opportunities in local communities. She was also the recipient of the 2026 35×35 USTA President’s Impact Award.

At the heart of Tennis Unbounded is a simple belief: when we support coaches, develop players, and strengthen communities, we grow more than the game—we create opportunities for people to thrive through tennis.