Underclass Invitational (Invite Only)
| Name | State | School | Class | Pos | Commitment |
| Mike Addante | IL | Jacobs | 2017 | OF | Nebraska |
| Brenden Alsup | IL | Jefferson | 2017 | SS | |
| Ronald Applewhite | IL | Rich East | 2017 | SS | Olney Central JC |
| Parker Aquino | IL | Naperville North | 2018 | RHP | College of Southern Nevada |
| Konnor Ash | IL | Plainfield South | 2017 | RHP | Missouri |
| Josh Baker | IL | Lockport | 2017 | RHP | |
| Andrew Bartholow | IL | Loyola | 2017 | OF | |
| Blake Begner | IL | Peoria Heights | 2017 | LHP | Illinois Central JC |
| Easton Bertrand | IL | Manteno | 2017 | OF | Minnesota |
| Montreal Blade | IL | Marian Catholic | 2017 | OF | |
| Evan Bogenschneider | IL | Hanover Central | 2018 | 2B | |
| Johnny Buckner | IL | Mundelein | 2017 | RHP | College of Lake County |
| Cristian Burciaga | IL | Rochelle | 2017 | 1B | Kankakee CC |
| Jimmy Burnette | IL | St. Laurence | 2017 | LHP | Saint Leo University |
| Kade Burns | IL | Edwardsville | 2017 | SS | Central Missouri |
| Jacob Campbell | WI | Janesville Craig | 2018 | C | Illinois |
| Dominic Connolly | IL | Lemont | 2017 | SS | Maryville University |
| Anthony Coticchio | IL | Belvidere | 2017 | C | |
| Ashton Creal | IL | Metea Valley | 2017 | OF | John A. Logan JC |
| Jalan Cruz | IL | Bolingbrook | 2017 | 2B | |
| Brad Czerniejewski | IL | Lake Forest | 2017 | OF | Texas Christian |
| Jeremy Davis | IL | Geneva | 2017 | OF | |
| Anthony DeConcilis | IL | Lake Park | 2018 | SS | Illinois-Springfield |
| Bryant Diel | IL | South Elgin | 2017 | OF | Heartland CC |
| DJ Donofrio | IL | Plainfield North | 2017 | OF | |
| Joshua Dyke | IL | Andrew | 2018 | OF | |
| Andrew Erickson | IL | Tuscola | 2018 | C | Heartland CC |
| Tyler Esplin | FL | IMG Academy | 2017 | OF | Charlotte |
| Thomas Farrell | IL | St. Laurence | 2017 | OF | Illinois-Chicago |
| Sam Fradin | IL | Deerfield | 2017 | 3B | |
| Zach Frieling | IL | Chicago Christian | 2017 | SS | St. Louis |
| Garrett Goetz | IL | Oswego East | 2017 | RHP | Waubonsee CC |
| Corey Graham | IL | Crete-Monee | 2018 | OF | Kirkwood CC |
| Ryan Hampe | IL | Sandburg | 2018 | C | Illinois |
| Brian Heidbreder | IL | Lake Forest | 2017 | OF | Hendrix College |
| William Jackson | IL | Loyola | 2018 | RHP | University of St. Thomas |
| Jake Jones | IL | Oak Forest | 2017 | RHP | Murray State |
| Hunter Keim | IL | Rock Island | 2017 | RHP | Quincy University |
| Kyler Kopacz | IL | Lincoln-Way West | 2017 | OF | Amherst College |
| Ryan Kutt | IL | Brother Rice | 2017 | RHP | Illinois |
| Thomas Larson | IL | Families of Faith Christian | 2017 | OF | Olivet Nazarene University |
| Carter Lawler | IL | Hampshire | 2017 | RHP | Illinois-Springfield |
| Yaki Lee | IL | Harlan | 2017 | C | |
| Michael Lehner | WI | Muskego | 2017 | 3B | McHenry County JC |
| Jalen Lemons | IL | Simeon | 2018 | 3B | Frontier Community College |
| Ryan Lin-Peistrup | IL | Loyola | 2017 | SS | Illinois-Chicago |
| Christian Lucio | IL | Mount Carmel | 2018 | SS | Eastern Kentucky |
| Brandon Mahoney | IL | Brother Rice | 2018 | 1B | Carthage College |
| Charlie Mangieri | IL | Dunlap | 2018 | 1B | Northwestern |
| Austin Marozas | IL | Plainfield South | 2017 | RHP | Missouri |
| Eastin May | IL | Joliet West | 2017 | C | John A. Logan JC |
| Nick Mayerhofer | IL | Plainfield South | 2017 | SS | Illinois-Springfield |
| Pat Mayo | IL | Brother Rice | 2017 | 3B | Spring Hill College |
| Connor McCormick | IL | Manteno | 2017 | C | McKendree University |
| William McManaman | IL | St. Ignatius | 2018 | LHP | Denison University |
| Bobby Miller | IL | McHenry West | 2017 | RHP | Louisville |
| Brendan Murphy | IL | Mundelein | 2017 | LHP | Arizona State |
| Andrew Nelson | IL | Wheaton North | 2017 | RHP | |
| Steven Nguyen | IL | Alton | 2017 | SS | McKendree University |
| Shane Nolan | IL | Lake Zurich | 2017 | RHP | Wisconsin-Platteville |
| JP Norman | IL | Kaneland | 2017 | C | |
| David Omilinsky | IL | Home School | 2017 | 3B | |
| Joe Oswald | IL | Andrew | 2017 | 1B | |
| Steven Pattan | IL | Alton | 2017 | C | Southern Illinois-Edwardsville |
| Tyler Pennington | IL | Cary Grove | 2017 | C | Arkansas |
| Malik Peters | IL | Mount Carmel | 2018 | SS | Northern Illinois |
| Jackson Petersen | IL | Libertyville | 2017 | C | Pennsylvania |
| Jake Pomykalski | IL | Lincoln-Way East | 2017 | RHP | Illinois-Chicago |
| Niko Pozzi | IL | Mount Carmel | 2018 | C | |
| Marcus Protz | IL | North Boone | 2017 | C | College of DuPage |
| Daniel Reed | IL | Edwardsville | 2017 | C | Illinois College |
| Jake Ridgway | IL | Brother Rice | 2017 | C | Indiana State |
| Liam Ritten | IL | Plainfield East | 2018 | RHP | Joliet JC |
| Joe Rizzo | IL | Huntley | 2017 | C | North Central College |
| Cameron Robinson | IL | Champaign Central | 2018 | RHP | Louisville |
| Charlie Rodriguez | IL | St. Rita | 2017 | OF | Concordia University (WI) |
| Max Rosenthal | IL | New Trier | 2017 | C | |
| Bobby Seymour | IL | Mount Carmel | 2017 | 1B | Wake Forest |
| Nathan Shapiro | IL | New Trier | 2018 | 3B | Case Western |
| D'Eric Shenault | IL | Kenwood | 2018 | SS | Kirkwood CC |
| KC Simonich | IL | Lemont | 2017 | OF | New Orleans |
| Seamus Sjostrom | IL | Mount Carmel | 2017 | OF | Millikin University |
| Zach Spence | IL | Marian Catholic | 2017 | 3B | |
| Chase Stanke | IL | Marmion | 2018 | C | Minnesota |
| Nickolas Strysik | IL | Lockport | 2017 | OF | Central College |
| Jack Surin | IL | Joliet Catholic | 2017 | C | Benedictine University (IL) |
| Kenny Swart | IL | Lincoln-Way East | 2017 | RHP | |
| Tyler Talbot | IL | Minooka | 2017 | LHP | Lewis University |
| Trey Torain | IL | Loyola | 2018 | OF | George Washington |
| Tavion Towers | IL | Harlan | 2017 | 2B | Claflin University |
| Bryan Truitt | IL | Rockford Christian | 2017 | RHP | Iowa Western CC |
| JD Villafuerte | IL | Normal Community | 2017 | SS | |
| Zaid Walker | IL | Homewood-Flossmoor | 2018 | OF | Michigan State |
| Tommy Washington | IL | Harlan | 2017 | SS | Northern Illinois |
| Andrew Wilhite | IL | Stillman Valley | 2018 | SS | Minnesota |
| Donivan Williams | IL | Richards | 2017 | 3B | Illinois State |
| Tegan Woods | IL | Freeport | 2018 | SS | |
| Jacob Young | IL | Downers Grove North | 2018 | RHP | Morton JC |
| Jeffrey Zack | IL | Romeoville | 2017 | RHP | Howard JC |