Wisconsin athletic director Barry Alvarez made it official on Tuesday. After over three decades at Wisconsin as a head football coach (1990-2005) and athletic director (2004-21), Alvarez is retiring.

Alvarez made the announcement official on Tuesday morning, then held a press conference later in the day. He is revered as one of the best athletic directors in the B1G after leading Wisconsin to so much success.

Everyone at Wisconsin will certainly miss Alvarez’s presence, but so will ESPN college football analyst Kirk Herbstreit. The College GameDay personality tweeted out a message to the retiring AD.

“One of my ALL TIME favorites in college athletics Barry Alvarez is officially retiring this summer. What a career,” Herbstreit wrote. “As a [Hall of Fame] head coach in Madison and equally impressive run as AD for the Badgers. Congrats on all your successes Coach — we’ll all miss your leadership and style.”

Alvarez has been a fixture in the B1G for over 30 years and his experience in the conference has been a major benefit for the league.

“It has been an honor to be a part of Wisconsin Athletics and I take great pride in all we have accomplished over the last three decades,” Alvarez said in a statement. “From championships, to improvements on campus, to impacting thousands of student-athletes, it’s been a great ride. I’m grateful for the support, generosity, enthusiasm and loyalty of Badgers in the state of Wisconsin and beyond. Thank you.” 

As a head coach at Wisconsin, Alvarez posted a career record of 120-73-4. His teams finished ranked in the AP Poll six times and he guided the Badgers to 11 bowl games and won three B1G titles.