In 1982, Buffer began his career as a ring announcer. By 1983, he was announcing all boxing matches promoted by Bob Arum's Top Rank on ESPN, which gave him a national identity at a time when ring announcers were strictly locally hired talent. By 1984, Buffer developed the catchphrase "Let's get ready to rumble" in his announcing, which gained enormous popularity. He began the process of obtaining a federal trademark for the phrase in the 1980s, acquiring it in 1992. Consequently, Buffer has earned in excess of $400 million with the license for his trademark.
By the late 1980s, Buffer was the exclusive ring announcer for all bouts in Donald Trump-owned casinos. Trump said of Buffer, "He's great, he's the choice, he has a unique ability...I told my people, 'We got to have him.'" Buffer's work was also admired by many boxing greats. Sugar Ray Leonard once told Buffer, "When you introduce a fighter, it makes him want to fight."
In 2018, Buffer signed with DAZN to serve as the exclusive ring announcer for all of its boxing broadcasts, which include deals with Matchroom.Lets get ready to rumble! The words are synonymous with Michael Buffer - Captured in this dynamic style. Commissioned by matchmaker Joe Forbes and presented to Buffer at the Manchester Crowne Plaza