Sears is one of the founding members of the St. Louis Amateur Baseball Association. SLABA was organized in 1987 to offer players maximum exposure to the toughest competition by affiliating with nationally recognized and sanctioned youth baseball programs. Sears has been the Program Director of the Jefferson County Blazers since 1992. Prior to that, he was a Blazers coach. The SLABA Blazers program has provided hundreds of young men the opportunity to play baseball at the collegiate and professional level. Blazer teams have won numerous league titles and championships. Sears has been a board member of SLABA since 1991. He has also served as treasurer since 1991. He manages SLABA's league-wide finances. Sears is in charge of SLABA's tournaments, all-star games, and banquets. Sears coached the Arnold American Legion team from 1983 to 1991. He was the head varsity baseball coach at Fox High School from 1998 to 2001. He was the assistant varsity coach at Fox from 1992 to 1997, and the sophomore coach from 1980 to 1991. He was the Athletic Director at Fox High School from 2001 to 2007. A left-handed first baseman, Sears played for Jennings High School from 1970 to 1974. He played first base for Northeast Missouri State University from 1974 to 1978. Mike served on the Board of Directors of the Greater St. Louis Amateur Baseball Hall of Fame. He passed away in March 2025.