After singing "The Star-Spangled Banner" in pregame, Johnson accounted for all three of the White Sox's hits with a pair of solo home runs and a double in a 2–1 win over the Oakland A's in the opener of a doubleheader at Comiskey Park on June 19, 1977.

[1][2] Lamar's coaching career began in 1988, when he was hired by the Milwaukee Brewers as a minor league hitting instructor.

[3] In December 1994, Lamar Johnson was named by manager Phil Garner as the hitting coach for the Brewers big league club.

In 2003, Johnson served as hitting coach for the Seattle Mariners who, despite playing in a pitchers park, had one of the better offenses in the American League that season, winning 93 games.

With Johnson overseeing the development of young hitters, the Mets farm system has produced enough talent that on April 26, 2011, the team fielded a starting lineup of all homegrown players for the first time since 1971.