Gaven assisted the Team Colorado 14 Green team in the 2022-23 season in his senior season as a TCV athlete. Gaven helped coach the team to 4 RMR 14U Power victories and 2 runner-up 14U power finishes. The team finished with a 20-1-2 record in Region boys power events. 14 Green also won the 16 club silver bracket at the USA Volleyball Boys Junior National Championship in Salt Lake City with an 8-3 record. 

Gaven Hackley was named tournament 18 USA tournament MVP at the 2023 USA Volleyball Boys Nationals after leading his 18 Black team to an 18 USA national title (11-0 at nationals). He will play for the University of Jamestown in 2023-24 to begin his collegiate career. 

Gaven lead TCV 18 Black to a 20-4 RMR record and #1 ranking in the Region  (3 RMR Power victories), an 18 USA silver bracket win in the Winter Championship in Chicago (18 USA bid) and a 5th place finish at the Dennis Lafata Boys Bid Tournament in St. Louis. He was also selected the U19 RMR Boys All-Star team. 

Gaven played for TCV from 2016-2023 (7 seasons) and brings a wealth of playing experience to his coaching role. Gaven helped lead the 18 Black team in the 2021-22 season to an undefeated in-state record in junior play (5 RMR Power Victories), a second place finish in 18 USA at the Florida Fest boys qualifier (the clubs first USAV boys bid to nationals) and an 8-2 record in the 18 USA Division at USA Volleyball Boys Nationals. 

Gaven was named to the 2022 inaugural RMR Boys All-Star team to compete at the USA Volleyball All-Star Championship. 

Gaven played high school volleyball at Douglas County High School and helped lead the Huskies to the first ever CHSAA state championship 2021 and a state tournament appearance in 2023. He was name first team All-State and All-Conference his season season and was recognized on the AVCA All-American watch list. Gaven also served as a team manager for the girls high school team at DC.