Milwaukee Preseason I.D.
| Name | State | School | Class | Pos | Commitment |
| Nick Aide | WI | Franklin | 2020 | SS | Rock Valley JC |
| Jordan Bailey | WI | Janesville Parker | 2018 | OF | Bradley |
| Justin Baker | WI | Waukesha West | 2018 | 3B | Wisconsin-La Crosse |
| Andrew Biertzer | WI | West Bend West | 2019 | LHP | Saginaw Valley State |
| Alex Binelas | WI | Oak Creek | 2018 | 1B | Louisville |
| Beau Blackdeer | WI | DeForest | 2019 | C | |
| Luke Blaha | WI | Mukwonago | 2019 | OF | Wisconsin-Stevens Point |
| Dan Blomgren | WI | Janesville Craig | 2019 | SS | Chipola College |
| Chase Bloxdorf | WI | Union Grove | 2019 | RHP | |
| Mitch Borkovec | WI | Muskego | 2019 | 1B | |
| James Brennan II | WI | Janesville Craig | 2018 | OF | Judson University (IL) |
| John Breske | WI | Everest | 2018 | RHP | Winona State University |
| Zachary Brewer | WI | Hartford Union | 2020 | 2B | |
| Jackson Brown | WI | Oconomowoc | 2018 | RHP | Madison JC |
| Evan Callow | WI | Indian Trail | 2018 | OF | |
| Jacob Campbell | WI | Janesville Craig | 2018 | C | Illinois |
| Blake Carey | WI | University School of Milwaukee | 2020 | C | Lindenwood University |
| Hunter Clark | WI | Seymour | 2019 | RHP | |
| Marcus Cline | WI | Fall Creek | 2019 | 2B | Wisconsin-Milwaukee |
| Colton Coca | WI | Case | 2020 | 3B | Central Michigan |
| Thomas Coffey | WI | Bradford | 2019 | RHP | Carthage College |
| Cade Curtis | WI | Ashwaubenon | 2017 | LHP | |
| Jimmy D'Angelo | WI | West Bend West | 2019 | C | |
| Jacob Devorkin | WI | Nicolet | 2020 | 1B | |
| Gunnar Doyle | WI | Oak Creek | 2020 | OF | Madison JC |
| Nathan Ebersole | WI | Whitefish Bay | 2019 | SS | Madison JC |
| Trent Ehlers | WI | Sturgeon Bay | 2019 | LHP | Wisconsin-Whitewater |
| Eric Erato | WI | Sussex Hamilton | 2020 | 3B | Northern Illinois |
| Nick Evert | WI | Franklin | 2019 | RHP | Carroll University |
| Trace Ferreira | WI | New Berlin West | 2019 | OF | Indiana State |
| Devin Fish | WI | Eisenhower | 2018 | RHP | Salem University |
| Mitchell Froehlich | WI | Eau Claire Memorial | 2018 | 2B | |
| Sam Garvoille | WI | Janesville Parker | 2018 | OF | Wisconsin-Oshkosh |
| Jakob Gast | WI | Hale | 2019 | C | Milwaukee Area Technical JC |
| Kyle Gendron | WI | Wilmot | 2018 | RHP | Winona State University |
| Joe Georger | WI | Appleton West | 2019 | 1B | Washington University (MO) |
| Jake Goodman | WI | Nicolet | 2019 | C | |
| Cooper Griffiths | WI | Westosha Central | 2020 | RHP | Rend Lake JC |
| Daniel Hahn | WI | Cudahy | 2018 | SS | Concordia University (WI) |
| Erik Hanschke | WI | West Bend West | 2018 | RHP | |
| Luke Hansel | WI | Union Grove | 2019 | RHP | Madison JC |
| Dalton Heffel | WI | Racine Lutheran | 2018 | 1B | |
| Nathan Hefle | WI | Germantown | 2017 | RHP | Purdue University Fort Wayne |
| Jack Heiring | WI | Christian Life | 2020 | OF | Southeastern CC (IA) |
| Wyatt Hennessy | WI | Mukwonago | 2019 | 2B | Jamestown CC |
| Evan Henry | WI | Wilmot | 2019 | C | Carroll University |
| Max Herro | WI | Kettle Moraine | 2018 | 3B | Wisconsin-Stevens Point |
| Adam Hill | WI | Wauwatosa East | 2019 | 3B | |
| Luke Howard | WI | Martin Luther | 2018 | SS | Concordia University (WI) |
| Riley Hughes | WI | Bradford | 2019 | C | Carthage College |
| Alexander Huissen | WI | Lakes Community | 2019 | OF | Adrian College |
| Tanner Hurley | WI | Kenosha Bradford | 2019 | OF | |
| Jeff Hynes | WI | Brookfield Academy | 2018 | C | Austin College |
| Alex Jamroziak | WI | Muskego | 2021 | RHP | |
| Steve Jamroziak | WI | Muskego | 2019 | OF | Minnesota |
| Jack Jarecki | WI | Marquette | 2018 | SS | Wisconsin-La Crosse |
| Eric Juarez | WI | Tremper | 2019 | SS | |
| Matthew Keller | WI | Union Grove | 2019 | RHP | Milwaukee Area Technical JC |
| George Klassen | WI | Port Washington | 2020 | RHP | Minnesota |
| Sabastian Kloss | WI | Whitnall | 2020 | RHP | Rock Valley JC |
| Justin Knodl | WI | Germantown | 2018 | LHP | |
| Daniel Knudson | WI | Menomonee Falls | 2019 | OF | |
| Andy Kornacki | WI | Sussex Hamilton | 2018 | RHP | |
| Blake Kunz | WI | Germantown | 2018 | RHP | |
| Tommy Lamb | WI | Grafton | 2020 | LHP | Oklahoma |
| Luke Lamont | WI | Whitefish Bay | 2018 | RHP | |
| Logan Landers | WI | Brookfield Academy | 2021 | RHP | |
| Kameron Laskowski | WI | Sussex Hamilton | 2019 | C | Madison JC |
| Derek Lee | WI | Waunakee | 2018 | 2B | Madison JC |
| Calvin Leeland | WI | Martin Luther | 2018 | 3B | |
| Michael Lepow | WI | Racine Case | 2018 | OF | |
| Drew Leszczynski | WI | Brookfield Central | 2019 | OF | |
| Riley LeTourneau | WI | Brookfield East | 2019 | RHP | Madison JC |
| Arthur Liebau | WI | Homestead | 2020 | RHP | Lindenwood University |
| Collin Long | WI | Union Grove | 2020 | RHP | |
| Jackson Mandella | WI | Nicolet | 2018 | RHP | McHenry County JC |
| TJ Manteufel | WI | Union Grove | 2020 | SS | Bradley |
| Logan Mantz | WI | Slinger | 2019 | SS | Madison JC |
| Hunter Martindale | WI | Beloit Turner | 2017 | 1B | Wisconsin-Stout |
| John May | WI | Kewaskum | 2018 | SS | |
| Ryan Mazza | WI | Brookfield East | 2019 | 3B | Wisconsin-La Crosse |
| Kyle McKinnon | WI | Bradford | 2019 | RHP | Carthage College |
| Steven Mehmert | WI | Lake Country Lutheran | 2018 | OF | |
| Bryce Miller | WI | Franklin | 2020 | C | Jefferson JC |
| Jacob Neese | WI | Sheybogan North | 2019 | 3B | Parkland College |
| Jake Orthober | WI | Marquette | 2020 | SS | University of St. Thomas |
| Hunter Paro | WI | Oak Creek | 2018 | RHP | |
| Gunner Peterson | WI | Wilmot | 2018 | OF | Illinois State |
| Tanner Peterson | WI | Wilmot | 2019 | OF | Illinois State |
| Ian Petoskey | WI | Pewaukee | 2018 | 3B | |
| Harrison Phillips | WI | Brookfield Central | 2018 | 3B | Ripon College |
| Nathan Platter | WI | Oconomowoc | 2019 | RHP | Winona State University |
| Connor Prielipp | WI | Tomah | 2019 | LHP | Alabama |
| Aaron Quilling | WI | Mukwonago | 2019 | 2B | Northwood University |
| Ben Randow | WI | South Milwaukee | 2017 | 2B | |
| Charlie Ravanelli | WI | Homestaed | 2019 | 2B | |
| Fernando Rodriguez | WI | Saint Thomas More | 2017 | OF | |
| Miles Rodriguez | WI | Indian Trail | 2019 | OF | |
| Ryen Ryba | WI | Homestead | 2018 | SS | Minnesota State University-Mankato |
| Scott Savage | WI | Hartford Union | 2019 | OF | South Mountain CC |
| Ben Seaman | WI | West Bend East | 2018 | SS | |
| Michael Seegers | WI | Home School | 2020 | SS | Iowa |
| Troy Shephard | WI | West Allis Hale | 2020 | C | |
| Sam Smith | WI | Madison Memorial | 2018 | SS | Barstow Community College |
| Jacob Springer | WI | Tremper | 2019 | C | |
| Tucker Strommen | WI | Burlington | 2019 | SS | |
| Colton Surges | WI | Badger | 2018 | 1B | |
| Cooper Tamblyn | WI | Muskego | 2019 | C | Wisconsin-Stevens Point |
| Paul Toetz | WI | Greendale | 2019 | SS | Indiana |
| Keegan Torkilson | WI | New Berlin West | 2019 | SS | Milwaukee Area Technical JC |
| Cody Tostrud | WI | Bradford | 2019 | OF | Carthage College |
| Joe Turco | WI | Franklin | 2021 | C | Wisconsin-Platteville |
| Trent Turzenski | WI | Burlington | 2019 | RHP | Valparaiso |
| Luke Uhwat | IL | Richmond Burton | 2019 | RHP | McHenry County JC |
| Jackson Wagner | WI | Oak Creek | 2018 | OF | |
| Miller Wallace | WI | Oconomowoc | 2019 | 3B | McHenry County JC |
| Xavier Watson | WI | South Milwaukee | 2019 | SS | Illinois |
| Emory Weeden | WI | Homestead | 2019 | RHP | |
| Jim Wilke | WI | Notre Dame | 2018 | LHP | St. Norbert College |