Preseason I.D. - Illiana
| Name | State | School | Class | Pos | Commitment |
| Brian Adams | IL | Sandburg | 2019 | OF | Wisconsin-Oshkosh |
| Nick Anderson | IN | Highland | 2018 | C | Kankakee CC |
| Marek Bauner | IN | Crown Point | 2019 | RHP | Tennessee-Martin |
| Michael Bohlen | IL | Marian Catholic | 2019 | 3B | Northern Kentucky |
| Ryan Brown | IL | Marian Catholic | 2018 | 2B | |
| Adam Budorick | IL | Glenbrook South | 2018 | OF | Lesley University |
| Joshua Coe | IL | Homewood-Flossmoor | 2018 | OF | |
| Antwain Danner | IL | Simeon | 2018 | OF | Muskegon CC |
| Trevor Davis | IL | Danville | 2020 | C | Eastern Illinois |
| Christian Dearman | IL | Thornton Fractional South | 2018 | OF | |
| Nick Doman | IL | Marist | 2018 | C | |
| Dylan Elazegui | IL | Hinsdale Central | 2020 | OF | |
| Kyle Fasbinder | IL | Vernon Hills | 2018 | 1B | |
| Ryan Fender | IN | Crown Point | 2019 | RHP | Murray State |
| Josh Fleming | IL | Plainfield North | 2019 | RHP | Joliet JC |
| Xavier Free | IL | Rich Central | 2018 | 1B | |
| Stephen Gilbertsen | IN | Chesterton | 2018 | LHP | Illinois State |
| Raymond Hansen | IL | Crete-Monee | 2018 | 2B | |
| Dylan Hauck | IL | Crete-Monee | 2018 | 3B | Kalamazoo College |
| Kyle Heavey | IL | Downers Grove South | 2019 | RHP | |
| Nicholas Heiden | IL | St. Laurence | 2018 | RHP | Webster University |
| Eben Heine | IL | Plainfield North | 2020 | RHP | USC Upstate |
| Conner Hoffman | IN | Lake Central | 2018 | 1B | Purdue University-Northwest |
| Jonathan Keller | IL | Hoffman Estates | 2018 | RHP | North Central College |
| Payton Kerr | IN | Penn | 2018 | SS | |
| Matt Kocinski | IL | Sandburg | 2018 | 2B | Wisconsin-Oshkosh |
| Cherokee LeBeau | IL | Minooka | 2018 | 3B | Oakland |
| Josh Lindeman | IN | Crown Point | 2019 | SS | Purdue University-Northwest |
| Matthew Manint | IL | Tri-Valley | 2018 | C | Fontbonne University |
| Freddie March | IL | Lake Park | 2018 | C | Elmhurst University |
| Alex Marquardt | IL | Monticello | 2018 | RHP | North Central College |
| Coliani Martinez | IL | Lake View | 2018 | 3B | Joliet JC |
| Eric Mickenbecker | IL | Plainfield North | 2019 | RHP | |
| Maurice Munoz | IL | Marian Catholic | 2018 | OF | Aurora University |
| Nick Nelson | IL | Jones College Prep | 2018 | OF | Oberlin College |
| Charlie Owens | IL | Loyola | 2019 | OF | |
| Ryan Pawlak | IL | Plainfield South | 2019 | 1B | Wisconsin-Oshkosh |
| Zach Pawlak | IL | Plainfield South | 2020 | 3B | |
| Ryan Piontek | IL | St. Charles North | 2018 | 3B | Calvin University |
| Alex Pittman | IL | Morgan Park | 2019 | 3B | Frontier Community College |
| Nathaniel Quinn | IL | Morton West | 2018 | 2B | Keiser University |
| Carson Ramirez | IN | Munster | 2018 | RHP | |
| Daniel Reynolds | IL | Evergreen Park | 2018 | OF | South Suburban JC |
| Alex Rich | IN | Crown Point | 2019 | OF | Grace College |
| Jared Schassburger | IN | Lake Central | 2018 | C | |
| Tyler Schlaffer | IL | Homewood-Flossmoor | 2019 | RHP | Illinois-Chicago |
| Tyrone Simpson | IL | Homewood-Flossmoor | 2019 | 1B | Robert Morris University |
| Patrick Straub | IL | Metea Valley | 2020 | RHP | Ohio |
| Nathan Szymanski | IL | Joliet Catholic | 2020 | OF | Dodge City CC |
| Chris Torres | IN | Chesterton | 2018 | RHP | Wabash Valley JC |
| Jesse Torres | IL | Richards | 2019 | OF | |
| Julio Trevino | IL | Holy Trinity | 2019 | 3B | |
| Johnny Vittori | IN | Crown Point | 2018 | C | |
| Alex Weisshaar | IL | Montini | 2018 | C | |
| Joey Wells | IN | Lake Central | 2019 | SS | |
| Garrett Wiggs | IN | Lowell | 2018 | RHP | Purdue University-Northwest |
| Collin Wilma | IL | Tinley Park | 2019 | RHP | Southeast Missouri State |
| Tommy Windt | IL | Sandburg | 2019 | 3B | South Suburban JC |
| Kyle Wisch | IL | Hinsdale Central | 2019 | RHP | Nebraska |