Mike Brey officially announced his plans to step away from Notre Dame at the end of the season on Thursday afternoon.

Brey has spent the last 23 seasons as Notre Dame’s head coach. He’s the winningest coach in program history and has led the Irish to the NCAA Tournament 13 times during his tenure.

Brey shared this message on Twitter shortly after the announcement was made:

Brey’s peak at Notre Dame was an impressive stretch from 2007-17 when he led the Irish to 8 NCAA Tournament appearances across 10 seasons. 2 of those teams — 2015 and 2016 — made it all the way to the Elite Eight.

Brey has won 481 games while at Notre Dame, which ranks 6th amongst active Division 1 coaches at their current programs. He also won 99 games at Delaware before moving to South Bend prior to the 2000-01 season.

Here’s some of the best reaction to the news that Brey would be stepping down at the end of the season: