East Tennessee State University

2025 Season (Redshirt) - Armbrister appeared in one game during the 2025 season...His lone appearance came on October 11 against VMI...Armbrister played one snap in the victory over the Keydets...Redshirted for the season. 

Prior to ETSU - Armbrister comes to ETSU after a stellar high school career at nearby Greeneville High School...He totaled 313 tackles (34 for loss), 11 sacks, forced eight fumbles, broke up 10 passes, and picked off one pass...Armbrister was a multiple-time All-State, All-Region, and All-Conference pick as a prep...Was named the Conference's Defensive Player of the Year as well as the County's Defensive Player of the Year during his high school career...Collected All-Area honors as well before coming to Johnson City...His high school team went a combined 48-5 when he was on the roster.