Kassidy Klefman-Stilwell began her volleyball career at age 7. She participated in both the Cleveland Volleyball Company and Maverick Volleyball Club Junior Olympic programs for ten years, winning an open division National Championship in 2011 on a team rated number one in the country. She was 1 of 10 selected to play on the Ohio High Performance team for two consecutive years. Kassidy grew up in the Parma City School District playing varsity volleyball at Valley Forge high school. During her career at Valley Forge Kassidy was named MVP, player of the year, and all conference four straight seasons. Her college career began at Cleveland State University where her team won the Horizon League Conference Championship. She transferred to Ursuline College to pursue a career in nursing and continue her volleyball career. During the 2018 season Kassidy marked her 1,000th dig in 2 years, which broke the record at UC. She is currently coaching Junior Olympic volleyball at Maverick Volleyball Club and teaches private lessons.