On August 18, 1989 — Dallas Green is fired as manager of the Yankees and replaced by former SS Bucky Dent. It is the 17th time the Yankees have changed managers since George Steinbrenner took over the club in 1973. The 1978 play-off hero loses his managerial debut to the Tigers in Detroit, 7 – 3.

Source:
Baseball Reference August 18
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game