| Current position | |
|---|---|
| Title | Head coach |
| Team | Indiana |
| Conference | Big Ten |
| Record | 174–123–1 |
| Biographical details | |
| Born | July 29, 1985 Bargersville, Indiana, U.S. |
| Alma mater | Wright State University |
| Playing career | |
| 2005–2007 | Dayton |
| 2008–2009 | Wright State |
| Position(s) | First baseman |
| Coaching career (HC unless noted) | |
| 2011 | Michigan (assistant) |
| 2012–2013 | Western Kentucky (assistant) |
| 2014–2016 | Wright State (assistant) |
| 2017–2018 | Wright State |
| 2019–present | Indiana |
| Head coaching record | |
| Overall | 251–159–1 |
| Tournaments | Horizon: 5–2 Big Ten: 5–8 NCAA: 3–4 |
| Accomplishments and honors | |
| Championships | |
| |
| Awards | |
| |
Jeffery Daniel Mercer (born July 25, 1985) is an American college baseball coach and former first baseman. He is head baseball coach at Indiana University. He played college baseball at the University of Dayton from 2005 to 2007 before transferring to Wright State University to play in 2008 and 2009. In 2009, he was named the Horizon League Player of the Year. He was the head baseball coach at Wright State University from 2017 to 2018.