Summer Preseason I.D.
| Name | State | School | Class | Pos | Commitment |
| Kyle Abatto | WI | Kettle Moraine | 2018 | 2B | |
| Dylan Anderson | WI | Neenah | 2020 | OF | Edgewood College |
| Tyler Anfinson | WI | Waukesha West | 2019 | 1B | |
| Bailey Banaszynski | WI | Brookfield East | 2019 | RHP | Winona State University |
| Kody Banse | WI | Racine Lutheran | 2018 | 2B | Milwaukee Area Technical JC |
| Masen Beatty | WI | Pewaukee | 2019 | C | Rock Valley JC |
| Carson Bernd | WI | Grafton | 2019 | OF | |
| Luke Blaha | WI | Mukwonago | 2019 | OF | Wisconsin-Stevens Point |
| Zach Brandenburg | WI | Grafton | 2018 | 1B | Western Technical JC |
| Danny Butler | WI | Brookfield East | 2018 | RHP | Dubuque |
| Nolan Buyze | WI | Oostburg | 2019 | OF | |
| Chris Byhre | WI | Catholic Memorial | 2020 | RHP | Eastern Kentucky |
| Tate Carter | WI | Brookfield Central | 2018 | RHP | Wisconsin-Whitewater |
| Teig Chase | WI | Kettle Moraine | 2018 | RHP | Wisconsin-Whitewater |
| Gino D'Alessio | WI | Pius XI | 2018 | C | Quincy University |
| Isaac Dirker | WI | Howards Grove | 2018 | RHP | Wisconsin-Milwaukee |
| Jacoby Endreas | WI | Sheboygan Falls | 2019 | 3B | Ellsworth CC |
| Garrison Ferone | WI | Shorewood | 2018 | SS | Beloit College |
| A.J. Foeckler | WI | Marquette University | 2019 | C | |
| Brennan Foeckler | WI | Marquette University | 2020 | RHP | |
| Tyler Gaecke | WI | Mukwonago | 2018 | OF | Wisconsin-Oshkosh |
| Jordan Gomez | WI | Homestead | 2019 | 3B | |
| Joel Grunert | WI | Oak Creek | 2019 | LHP | |
| John Gulrud | WI | Kettle Moraine | 2019 | C | |
| Max Herro | WI | Kettle Moraine | 2018 | 3B | Wisconsin-Stevens Point |
| Ryan Hubley | WI | Marquette University | 2019 | LHP | Madison JC |
| Jack Jarecki | WI | Marquette University | 2018 | SS | Wisconsin-La Crosse |
| Jason Jennerjohn | WI | Hortonville | 2019 | RHP | Eastern Illinois |
| Nicholas Johnson | WI | Cedarburg | 2020 | RHP | |
| Colin Kalinowski | WI | Oak Creek | 2019 | C | McHenry County JC |
| Chris Keup | WI | Waukesha West | 2018 | OF | |
| Mikey Kirkbride | WI | Pewaukee | 2018 | C | |
| Mason Kodrich | WI | West Allis Central | 2019 | C | |
| Nicholas Koenig | WI | Howards Grove | 2019 | OF | Illinois Central JC |
| Josh Kolb | WI | Kettle Moraine | 2018 | OF | Carroll University |
| Bryce Konitzer | WI | Mukwonago | 2018 | RHP | Illinois State |
| Joe Koscinski | WI | Catholic Memorial | 2019 | 2B | Marian University (WI) |
| Brandon Lenczner | WI | Oak Creek | 2019 | SS | |
| Riley LeTourneau | WI | Brookfield East | 2019 | RHP | Madison JC |
| Jackson Mandella | WI | Nicolet | 2018 | RHP | McHenry County JC |
| Ryan Mazza | WI | Brookfield East | 2019 | 3B | Wisconsin-La Crosse |
| Jack McGee | WI | Greendale | 2018 | SS | |
| Michael Mikoda | WI | Arrowhead | 2019 | C | |
| Casey Mir | WI | Menomonee Falls | 2019 | C | Carroll University |
| Ellis Nosek | WI | Kettle Moraine | 2018 | OF | |
| Brady Nowicki | WI | Mukwonago | 2018 | 2B | Indian Hills CC |
| Jack Pawlak | WI | Grafton | 2018 | C | |
| Cade Pisca | WI | Oak Creek | 2019 | RHP | St. Cloud Technical & CC |
| Will Ross | WI | Waunakee | 2020 | OF | St. Louis |
| Daniel Rueth | WI | Wauwatosa West | 2018 | 2B | College of DuPage |
| Boden Saikie | WI | New Berlin Eisenhower | 2018 | RHP | |
| Sean Sanchez | WI | Greendale | 2019 | OF | |
| Ben Siekierski | WI | Mukwonago | 2019 | 1B | Northwood University |
| Hayden Smith | WI | Kiel | 2018 | SS | Western Technical JC |
| Jesse Sponholz | WI | Greenfield | 2019 | SS | |
| Nick Sterman | WI | West Bend West | 2018 | OF | Marian University (WI) |
| Cole Surprenant | WI | Kewaskum | 2018 | RHP | |
| Joey Tadych | WI | Shawano | 2018 | OF | Hamline University |
| Cooper Tamblyn | WI | Muskego | 2019 | C | Wisconsin-Stevens Point |
| Sam Treffert | WI | Pius XI | 2018 | LHP | |
| Eli Verhagen | WI | Kaukauna | 2018 | 2B | |
| Casey Wade | WI | Germantown | 2019 | RHP | |
| Jackson Wagner | WI | Oak Creek | 2018 | OF | |
| Jakob Wals | IL | Plainfield East | 2018 | C | Judson University (IL) |
| Nicalas Wanker | WI | Oak Creek | 2018 | RHP | Wisconsin-La Crosse |
| Thomas Ward | WI | Waukesha West | 2020 | 3B | Carroll University |
| Jacob Wilde | WI | Waukesha West | 2019 | LHP | Madison JC |
| Jonathan Wizner | WI | Germantown | 2019 | SS | Wisconsin-La Crosse |