Kaiser officiated in the
World Series in
1987 and
1997, as well as the
All-Star Game in 1991. He also umpired in the
American League Championship Series in
1980,
1988,
1993 and
1995 (Game 6), and in the
American League Division Series in
1981,
1996 and
1997. He also worked the single-game playoff to decide the
AL West champion in . On May 6, 1982, he was home plate umpire for
Gaylord Perry's 300th career victory. Before reaching the major leagues, Kaiser worked as a
professional wrestler, wearing a black hood and being known as "The Hatchet Man." Players in 1998 and 1999, when polled anonymously, voted Kaiser among the worst AL umpires. In 1999, he was among the 68 umpires who
submitted their resignations en masse, in an unsuccessful attempt by the
Major League Umpires Association to force a new labor agreement; Kaiser was one of 13 who were not re-hired after union negotiations and litigation.
Weight During a period in which many umpires were criticized for their weights, Kaiser was the heaviest in the AL. Kaiser wrote in his 2003 autobiography that he weighed in high school. The AL listed his weight at from 1977 to 1979 and at from 1980 to 1982 before revising the figure to in 1983. Kaiser stayed at this weight for two more years, before dropping to in his final season. In a June 2004 column for ESPN's MLB Insider, pitcher
Tom Candiotti recalled that Kaiser "wouldn't move three steps to call a play." ==Later years==