[3] Courtney's volleyball career began in 2008, playing for four years with Archbishop Alter High School in Kettering, Ohio.

In the 2014 NCAA Tournament, she earned Most Outstanding Player honors after she recorded career-high 23 kills and 16 digs in the national semifinals win over Stanford.

In May 2021, she was named to team USA's 18-player roster for the FIVB Volleyball Nations League tournament.

Team USA would eventually win the gold medal after defeating Brazil in the finals.

In her debut match with her new club she won her first professional title, the 2021 Italian Super Cup, and received the Most Valuable Player award.