David Grewe was raised in Royal Oak, Michigan. He graduated from University of Detroit Jesuit High School and Academy in 1994. Grewe attended and played baseball for John Carroll University and the University of Dayton. He graduated from Dayton in 1998 as a sports management major with a double minor in marketing and public relations. While in college, Grewe was an assistant coach for the Motor City Pride summer team that posted a 29–7 record in 1996 and had 94 percent of its players advance to play at the collegiate level. Grewe earned three varsity letters at Dayton, playing catcher, first base and third base. In his senior season, he batted.324 and helped the Flyers earn their first winning season since 1979.
Coaching career
Grewe assisted at the University of Chicago for the 1999 and 2000 seasons. He then served as hitting coach and worked with the infielders and catchers as an assistant coach at Central Michigan University in 2001–2002. Prior to taking over in East Lansing, Grewe was the lead assistant coach at the University of Notre Dame, under the tutelage of head coach Paul Mainieri. Grewe served as recruiting coordinator for the Fighting Irish and was instrumental in attracting two top-10 recruiting classes to Notre Dame with the 2004 class being ranked number six in the country by Baseball America and the 2006 class being ranked number seven by Team One Baseball. The Irish won three straight Big East championships and went to three straight NCAA regionals during Grewe's tenure. In addition to his position as recruiting coordinator, Grewe worked with the catchers and hitters. Grewe was named head baseball coach at Michigan State on July 13, 2005. At age 29, he was one of the youngest Division 1 head coaches in the nation. The Spartans were 26–30 in 2006 and 25–26 in 2007. MSU's 2008 recruiting class was named tops in the Big 10 by Baseball America magazine. Despite the highly ranked recruiting classes, Grewe still failed to ever have a winning record has a head coach. On June 25, 2008, it was announced that Grewe would become the new Associate Head baseball coach at LSU, reuniting him with Paul Mainieri.
Year-by-year head coaching record
Personal
Grewe married the former Annie Brammer in the fall of 2006. David and his wife have two children, Charlie and Mary Claire.
