1991 Event Major league umpires and baseball reach a 4-year agreement 1990 Event The ML umpires announce that they will boycott exhibition games 1983 Event AL President Lee MacPhail suspends Yankees owner George Steinbrenner for one week, for his public criticism of umpires 1979 Event Baseball exhibition season opens with semipro and amateur umpires 1976 Event Rain out! Astrodome cancels game heavy rains make it difficult for visiting team and umpires to get through flooded streets to the stadium 1970 Event Baseball umpires call their 1st strike 1968 Event AL and NL umpires form a new Association of Major League Umpires
