University of Wyoming Athletics

2024: Last season, Gyllenborg appeared in nine games and made six starts for the Cowboys after battling an injury early in the season. He earned Second Team All-MW accolades at tight end. He led the Cowboys in receiving yards per game with 47.2 and tied for the team lead with three touchdown receptions. He ranked second on the Cowboys with 30 receptions in nine games. He also ranked second on the team in yards with 425. He caught the game winning touchdown to lift the Cowboys to a win over Washington State in the finale. Gyllenborg had a career-high 137 yards against San Jose State. It was the most by a Cowboy tight end since Jacob Hollister had 144 yards against Boise State in 2016. He also recorded seven games with three or more catches. He was the highest graded tight end in the MW according to Pro Football Focus. Helped the Cowboys record 604 yards of total offense at New Mexico for the most since recording 604 yards on Nov. 20, 2021 at Utah State. The Cowboys threw for 342 yards in that same contest for the most since the 2015 season.  Also excels in the classroom being named Academic All-Mountain West team.

2023: Gyllenborg participated in all 13 games with four starts, three of which were the final three contests of the season. He pulled in 23 passes for 360 yards with three touchdowns. Gyllenborg reeled in a career-long 89-yard touchdown pass against Hawaii, which also happened to be the longest passing touchdown of Wyoming’s season. He ended the game against the Rainbow Warriors with a career-high 128 yards receiving. Gyllenborg logged a career-high five receptions against Texas Tech, including the game-leveling touchdown pass on fourth down in overtime.
 
2022: Gyllenborg appeared in 12 games for the Cowboys. He finished the season with three catches for 21 yards. His three catches for 21 yards came in a contest against Fresno State in the regular season finale. He earned academic All-Mountain West honors.

2021: Redshirted for the Cowboys in his first season with the program.

High School: John Michael Gyllenborg was rated as a three-star rated recruit by 247 Sports.  247 Sports also ranked Gyllenborg as the No. 27 overall recruit in the state of Missouri, where Rockhurst High School is located.  Gyllenborg helped lead Rockhurst to the 6A District Playoffs in 2020.  He earned Academic All-State honors from the Missouri Football Coaches Association as a senior.  Gyllenborg only played football his senior season at Rockhurst High.  Also an outstanding basketball player, he earned Class 5 District 14 All-District honors in basketball as a junior, averaging 9.3 points and 6.5 rebounds per game.  He played for head football coach Kelly Donohoe in 2020.  He also received an offer to play football from Columbia University of the Ivy League.

Personal: Majoring in Finance at UW.