Cassie Crumal began her time at Liberty in June 2015, when she was hired to serve as an assistant volleyball coach. Focusing primarily on instructing Liberty's setters, she helped guide sophomore Anna Willey to a breakout season in 2015. Willey was named to the Big South All-Conference honorable mention team, leading the conference with 11.29 assists per set in conference play. She posted a team-high 12 double-doubles, also adding 12 40-assist matches, seven 50-assist contests and one 60-assist match.
The next year, 2016, saw continued development from Liberty's setters, Willey and freshman Hannah Morris. Willey was named to the second team for both Big South and VaSID All-State. She ranked second in the Big South in assists, and Willey entered her senior year ranked eighth in program history in career assists. Morris dished out a career-high 51 assists against USC Upstate, becoming the first Liberty freshman setter with a 50-assist match since Jade Craycraft in 2010
In 2018, Crumal helped guide Liberty to a successful first season in the ASUN Conference, as Liberty finished 10-6 in conference play and 15-17 overall. Liberty became the first volleyball team since ETSU in 2005 to make the ASUN Tournament in its first year in the conference. The Lady Flames posted a six-match home winning streak toward the end of the season, finishing 7-3 at the Vines Center. Hannah Morris was named to the ASUN All-Academic Team, the first Liberty volleyball player to do so.
Crumal brought four seasons of collegiate coaching experience with her to Lynchburg. She spent the 2014 campaign as an assistant coach at Northwood University in Midland, Mich. While at Northwood, she served as recruiting coordinator. She also was in charge of opponent scouting using extensive film study. In addition to her on-court coaching duties, Crumal was responsible for day-to-day operations.
Prior to her time at Northwood, she was an assistant coach at Buffalo during the 2013 season. She helped with the organization of team practice, while also assisting with day-to-day operations and opponent scouting. Crumal aided the Bulls as they posted an 18-12 record, tying the program record for single-season victories.
She spent the 2012-13 academic year as interim head men's and women's volleyball coach at Lees-McRae. During that season, she obtained head coaching experience, being in charge of practices, scouting, game day management, budget management and on-court instruction. Crumal was the youngest head volleyball coach in the nation at that time.
Crumal was a four-year member of the William & Mary volleyball program. A three-time CAA All-Academic Team member, she served as co-captain for the Tribe in 2010. She dished out a career-high 66 assists in a 3-2 William & Mary setback to Liberty as a freshman on Sept. 15, 2007.
Upon her graduation from William & Mary in 2011 with a bachelor's degree in psychology, she was ranked sixth in program history with 1,826 career assists. She earned a Master of Science degree in Sport Management from Liberty in 2014