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Our Coaching Staff
Our dedicated coaching staff is here to guide, inspire, and support you every step of the way. With a wealth of experience and a passion for helping you reach your goals, our coaches are committed to fostering a positive and empowering environment. Whether you're looking to enhance your skills or achieve personal milestones, our team is ready to help you unlock your full potential.
HRC Director of Rowing
MHS Head Coach
Tanner O'Connor
Tanner brings more than 15 years of rowing experience to his role as Director of Rowing & Head Coach. A USRowing Level II Certified Coach, he has developed athletes at both the collegiate and scholastic level.
During an impressive coaching stint with Oklahoma City University, his teams won multiple Dad Vail championships, placed 5th at the Head of the Charles, and earned a program-best finish at the IRA National Championship.
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Since rejoining his Alma Mater in 2020, Tanner has coached the Tigers to two podium finishes at the SRAA National Championship. In 2025 the Tigers won their first ever National Title in the Women's Varsity 2x. As a team, the Harmar Rowing Club and Marietta Tiger Navy has been revitalized under Tanner's leadership. Through organizational changes, cultural improvements, and refined training structures the rosters have grown in size and competitiveness. The Tigers have had a crew finish in the top 10 Nationally in 5 of the last 6 seasons.
In addition to National success under Tanner, The Tigers have won 7 medals at the Midwest Championship since 2020. Finished on the podium at the Stotesbury Cup and competed internationally at the Henley Women's Regatta.
Tanner resides in Marietta with his wife, Abigail, and their goldendoodle, Felix.
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MHS Girls Head Coach
Joe Tewkesbury
Joe Tewkesbury began his rowing career as a coxswain at Marietta High School, where his Senior Eight crew placed third at the 1966 American Scholastic Championships. He continued his success at Marietta College, winning Dad Vail gold medals in 1967 and 1968, while his Varsity Eight set five course records.
After serving four years in the US Navy, Joe returned to rowing and began a distinguished coaching career. Over 11 years at Marietta College, he coached both men’s and women’s teams, leading crews to multiple Dad Vail and IRA Regatta medals. At the University of Charleston, his teams earned 9 Dad Vail finals appearances, 5 medals, and set a new event record at the IRA Regatta in 1997. Joe also coached high school crews, including 6 unbeaten teams and several qualifiers for national championships.
A licensed USRowing referee and certified Level III coach, Joe officiated at numerous national events, including the 1996 Olympic Sports Festival and the 2007 USRowing Youth National Championships. He retired from the US Navy in 2006 after 22 years of service as a Chief Petty Officer.
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Strength & Conditioning Coach
Nat Miller
Nat has six years and twelve seasons of coaching experience at the elementary, middle and high school levels. He has led local, coed recreational and competitive soccer teams (U20 and below), sits on the board of the Marietta Youth Soccer League as League Registrar, and is involved with a number of youth sports organizations throughout the Mid-Ohio Valley. Nat participated in track & field and cross-country in high school and has competed at the high amateur level in endurance mountain bike racing, road cycling and running events as an adult.
Nat has been a contributing member of the Marietta community for 16 years and is a Marietta College and Athens University alum. He lives in Marietta with his wife and four children and is an organizing board member for a new competitive soccer league starting in Washington County in 2025.
With nearly 25 years of athletic programming experience, Nat brings his love of high intensity training and functional fitness to bear as the Marietta High School Navy's Strength and Conditioning Coach.
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