American University

*Mattox has left American University following the 2023-24 season.

Claire Mattox is entering her second season as an assistant coach with the American University women's basketball team after joining Tiffany Coll’s staff in July 2022.
 
Mattox was named to the WBCA's prestigious Thirty Under 30 list after her first season at Cornell in 2019-20. She worked with the Big Red guards, and the stats for three-pointers made per game rose consistently while she was on staff. Prior to Cornell, Mattox spent three years as an assistant coach at Vassar College in Poughkeepsie, N.Y., and two seasons at the University of Saint Mary in Leavenworth, Kan.
 
At Division III Vassar, Mattox had responsibilities ranging from practice and player development to game planning, recruiting, and fundraising. She helped head coach Candice Signor-Brown's team go from 12 to 17 to 21 wins in their three seasons together on the bench. The 21 wins in 2018-19 were the second-most in program history, with the Brewers earning the school's first-ever at-large bid to the NCAA Tournament. For their collective success, the Vassar coaching group was named the Liberty League Coaching Staff of the Year.
 
At the University of Saint Mary, Mattox served as the recruiting coordinator, along with assisting the head coach with other areas such as planning practices, skill development and game preparation, as well as serving as the junior varsity coach. She also served in Athletic Operations Management, employing work study students that were in charge of organizing and overseeing all athletic events.
 
Mattox was a four-year letterwinner at Washington College in Chestertown, Md. She was selected as a team captain her senior year and earned a spot on the 2012 All-Centennial Conference Sportsmanship Team. While at Washington, she was selected to participate in the WBCA "So You Want To Be A Coach" program in 2014. She graduated with a degree in environmental science and a minor in biology and creative writing in 2014, then earned her MBA in business administration from Saint Mary in 2016. Mattox has worked numerous camps throughout the East Coast and has presented annually at the Women's Basketball Coaches Association (WBCA) Convention.