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Meet our Coaches

Dr. Gylton Da Matta

Dr. Gylton Da Matta is the Founder and CEO of Alliance YOSA. He teaches Sports Management at Colorado State University and is the Founder of SportsEdTV Foundation. Dr. Da Matta is an active member of the American Volleyball Coaches Association, International Olympic Academy, USA Volleyball High Performance, Society of Health and Physical Education, National Association of Kinesiology in Higher Education, and International Association of Physical Education and Sports Schools in Higher Education.

In 2021, Dr. Da Matta published the 21st Century Volleyball Expertise book, over 80 instructional videos, and 30 volleyball blogs. Dr. Da Matta has coached the adult open division teams of SC Juniors VBC/USA Champion men's and women's earning the national title in both divisions after training the teams for only two months.

Dr. Da Matta has coached at the University of South Carolina and Appalachian State University. Recently, Dr. Da Matta coached the professional Barca Women's Volleyball team in Spain and now he has returned to coach the Alliance YOSA team in Fort Collins, Colorado.


Cheryl Lenell - Assistant Coach

Cheryl started playing volleyball as a freshman in high school. She played as a middle blocker all four years. She passed on the opportunity to play in college in order to go to a bigger college to focus on academics.  After marrying her husband Jack she played in adult leagues in her free time. After having children, her focus drifted from her work life to her kids. Now that they have grown up and have started playing volleyball as well, she is excited to start being involved in the sport she loves again.

Sawyer Dowden - Assistant Coach

Sawyer Dowden has been playing volleyball since the summer of 2021. Sawyer has attended many volleyball clinics in the Northern Colorado area including Windsor, Berthoud, and Greeley. This season Sawyer is a volunteer coach at Alliance YOSA where I intend to support and do my volleyball academic internship with Dr. Da Matta. Sawyer will also be a supporting manager for Alliance YOSA volleyball camps and clinics, the Volley Teens, Masters Volleyball, and the Volleyball International Program (V.I.P.). Sawyer is a native of Colorado and played volleyball at the University of Northern Colorado on the university's men's volleyball club team. Currently, he is taking a year off of school to work and get even more engrossed in the world and sport of volleyball. "Volleyball is something I am very passionate about and I love Alliance YOSA," said Sawyer.

Cheyanne Dube - Assistant Coach

Cheyanne grew up in the Northern Colorado Volleyball Scene. I grew up playing for her school teams starting in 6th grade and started a competitive club in 8th grade. After playing all 4 years in high school, she went on to play college volleyball for a junior college in KS called Allen, where she earned an associates degree in Business, and then transferred to The University of Science and Arts of Oklahoma, playing libero until she earned her Bachelors of Business Management.

Dr. Leandro Nogueira Dutra - Development Program Head Coach

Dr. Dutra's International professional experience involves being a coach of the Brazilian Under-21 Men's Volleyball National Teams when he worked as a performance analyst (scouter) and assistant coach for 12 years (from 2006 to 2017). Dr. Dutra is a Brazilian Volleyball Confederation Instructor (CBV, Brazil). He earned a degree Ph.D. in Sport Sciences through the program of the Federal University of Minas Gerais (Brazil). He also earned international certification as a coach through USA Volleyball Academy (2022). Dr. Dutra participated in the internationalization program at the Nebraska Athletic Performance Laboratory at the University of Nebraska-Lincoln (UNL, USA) (from 2019 to 2020). Achievements: (1) South American Championship. Men's U21 Volleyball Team. Three Gold Medals (2006, 2012, 2014); (2) World Championship. Men's U21 Volleyball Team. Two Gold Medals (2007, 2009) and Silver Medal (2013); (3) Pan American Cup. Men's U21 Volleyball Team. Two Gold Medals (2012, 2015).

Samantha Alexander - Assistant Girl's Coach

Coach Sammie started volleyball in middle school, she had been sure it was not her sport, but through Dr. Da Matta's coaching and belief in her, she went from barely making tryouts to playing Junior varsity as a sophomore in one season with him and his club.

Sammie's experience in club and volleyball in college has made her the athlete she is today by showing her how to work hard and to want to win for her team. She learned how to play safely and push limits. With a leap of faith, after her first year of college, she transferred to Iola, Kansas to finish her associates and play college volleyball. Having one of the best seasons of her volleyball career, she graduated in 2020 and returned home. Since her competitive years have stopped, she chose to take the opportunity to coach instead. Sammie's heart is to help girls find their way through volleyball and experience the lessons and memories they'll never forget.

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