Underclass Invitational (Invite Only)
- PBRPlus Underclass Invitational: Top Overall Prospects 3/09/18
- IL Underclass Invitational: Pitcher Analysis 3/08/18
- IL Underclass Invitational: Infielder Analysis 3/07/18
- IL Underclass Invitational: Outfield Analysis 3/06/18
- IL Underclass Invitational: Catcher Analysis 3/05/18
- IL Underclass Invitational: Statistical Analysis 2/22/18
- IL Underclass Invitational: Quick Hits 2/20/18
- IL Underclass Invitational: Preview 2/14/18
| Name | State | School | Class | Pos | Commitment |
| Cole Anderson | IL | St. Laurence | 2020 | LHP | Maryville University |
| Dominick Angellotti | IL | Marian Catholic | 2020 | 3B | University of Chicago |
| Ryan Auer | IL | Neuqua Valley | 2020 | LHP | |
| Marc Babicz | IL | St. Laurence | 2020 | OF | Lake Land JC |
| Michael Bernas | IL | Brother Rice | 2021 | LHP | Saint Leo University |
| Connor Best | IL | Coal City | 2020 | RHP | Heartland CC |
| Clay Billadeau | IL | Metea Valley | 2020 | C | |
| Mathew Birtman | IL | Lake Forest | 2020 | LHP | |
| Colin Bohanek | IL | Marist | 2020 | 3B | |
| Vince Borrelli | IL | Andrew | 2020 | RHP | South Suburban JC |
| Parker Bradford | IL | East Peoria | 2020 | RHP | Heartland CC |
| Alan Brown | IL | Oak Park-River Forest | 2020 | OF | Morehouse College |
| Jack Bruington | IN | Carmel | 2021 | LHP | |
| Sam Buduris | IL | Minooka | 2020 | OF | Benedictine University (IL) |
| Mason Burns | IL | Normal Community | 2020 | RHP | Western Kentucky |
| Kevin Butler | IL | Neuqua Valley | 2020 | C | Bellarmine University |
| Alex Calarco | IL | New Trier | 2021 | C | Northwestern |
| Casey Chignoli | IL | Joliet West | 2020 | OF | |
| Christopher Clarke | IL | Lyons Township | 2020 | OF | |
| Nolan Clifford | IL | Neuqua Valley | 2020 | SS | Creighton |
| Cole Collander | IL | Oswego East | 2021 | RHP | |
| Abe Collins | IL | Morton | 2020 | OF | Carl Sandburg JC |
| Gallien Coupet | IL | Homewood-Flossmoor | 2021 | SS | Heartland CC |
| Isaiah Coupet | IL | Homewood-Flossmoor | 2020 | LHP | Ohio State |
| Isaac Crabb | IL | Harrisburg | 2020 | RHP | Wabash Valley JC |
| Trevor Davis | IL | Danville | 2020 | C | Eastern Illinois |
| Zachary Davis | IL | Lake Zurich | 2020 | 3B | |
| Ernie Day | IL | Taft | 2020 | RHP | Iowa Western CC |
| Logan Delgado | IL | Antioch | 2020 | C | Bradley |
| Noah DeLuga | IL | Lake Zurich | 2020 | LHP | Minnesota |
| Nicholas DeMarco | IL | St. Charles North | 2021 | SS | Notre Dame |
| Drew Detmers | IL | Glenwood | 2020 | RHP | Millikin University |
| Jordan Donato | IL | Triad | 2021 | C | |
| Blake Donnan | IL | Taylorville | 2020 | RHP | Olney Central JC |
| Adam Dowler | IL | Oswego East | 2021 | LHP | Louisville |
| Vincent Esposito | IL | Rock Island | 2020 | 1B | Black Hawk JC-Moline |
| George Evangelopoulos | IL | Stagg | 2021 | LHP | Milwaukee School of Engineering |
| Nolan Fasel | IL | Andrew | 2020 | RHP | Benedictine University (IL) |
| Jack Feely | IL | Normal University | 2020 | RHP | Central Michigan |
| Davey Fitzpatrick | IL | Lincoln-Way East | 2020 | 3B | Lewis University |
| Daniel Flores | IL | East Leyden | 2021 | OF | Milwaukee Area Technical JC |
| Nathan Gehrke | IL | Joliet Catholic | 2020 | SS | Lake Land JC |
| Ben Gerl | IL | Lincoln-Way West | 2020 | LHP | Northern Kentucky |
| Connor Gill | IL | Oswego East | 2020 | RHP | Central Michigan |
| Johnny Gonsalves | IL | Tinley Park | 2020 | SS | McHenry County JC |
| Alec Gonzalez | IL | Marian Catholic | 2020 | SS | Tennessee |
| Conye Gordon | IL | Excel | 2020 | SS | |
| Mason Graham | IL | Neuqua Valley | 2020 | OF | Illinois-Springfield |
| Austin Greco | IL | Mundelein | 2020 | RHP | Miami (OH) |
| Eddie Harvey | IL | New Trier | 2020 | OF | Denison University |
| Zamaurion Hatcher | IL | Kenwood | 2021 | OF | Michigan |
| Tommy Heideman | IL | Normal Community | 2020 | 1B | Illinois State |
| Eben Heine | IL | Plainfield North | 2020 | RHP | USC Upstate |
| Nicholas Hemken | IL | Edwardsville | 2020 | C | Truman State University |
| Drew Henrikson | IL | Rochester | 2020 | RHP | Taylor University |
| Ben Hernandez | IL | De La Salle | 2020 | RHP | Illinois-Chicago |
| Cooper Herold | IL | Minooka | 2020 | RHP | John A. Logan JC |
| Connor Hincks | IL | Benet | 2020 | SS | Virginia |
| Zach Hise | IL | Joliet Catholic | 2020 | RHP | Missouri |
| Al Holguin | IL | St Rita | 2021 | 1B | USC Upstate |
| Tre Hondras | IL | Homewood-Flossmoor | 2020 | OF | John A. Logan JC |
| Mason Hsieh-Bailey | IL | Oak Park- River Forest | 2020 | OF | |
| Camden Janik | IL | Wauconda | 2021 | C | Illinois |
| Trevor King | IL | Glenbard West | 2020 | 1B | |
| Johnny Kubin | IL | Marist | 2020 | RHP | |
| William Le Pretre | IL | De La Salle | 2020 | RHP | Millikin University |
| Anthony Livermore | IL | Mount Carmel | 2020 | SS | Northwestern |
| Jack Lochner | IL | Lakes | 2020 | OF | Lindenwood University |
| Ryan Maloney | IL | Providence Catholic | 2020 | 1B | Clark State CC |
| Anthony Mangano | IL | Lake Zurich | 2020 | SS | Iowa |
| Pedro Martinez | SD | N/A | 2020 | RHP | |
| Kevin McCormick | IL | St. Laurence | 2021 | SS | Evansville |
| Shane McGaha | IL | Stevenson | 2020 | OF | |
| Trevor McLaughlin | IL | Reed Custer | 2020 | 3B | Rock Valley JC |
| Dax Meyer | IL | Willowbrook | 2020 | RHP | Triton JC |
| Connor Milton | IL | Champaign Central | 2020 | OF | Illinois |
| Aaron Montgomery | IL | Woodstock North | 2020 | C | |
| Jacob Mucha | IL | Providence Catholic | 2020 | OF | South Suburban JC |
| Jaylon Nauden | IL | Marian Catholic | 2021 | SS | Butler |
| Jared Novak | IL | Benet | 2020 | RHP | Bradley |
| Breck Nowik | IL | Lake Forest | 2020 | SS | Illinois-Chicago |
| Emmett Olson | IL | Maine West | 2020 | LHP | Nebraska |
| William Pauling | IL | Homewood-Flossmoor | 2021 | OF | |
| Michael Pawyza | IL | Lockport | 2020 | 3B | McHenry County JC |
| Brian Rapanan | IL | Warren | 2021 | C | Massachusetts Institute of Technology |
| Alex Rodriguez | IL | Bradley-Bourbonnais | 2020 | RHP | Valparaiso |
| Mason Roehr | IL | Granite City | 2021 | OF | Southwestern Illinois JC |
| Alex Rohrer | IL | Andrew | 2020 | RHP | |
| Drew Rudsinski | IL | Tri-Valley | 2020 | RHP | Saint Leo University |
| Joel Sarver | IL | Champaign Central | 2020 | RHP | Northwest Florida State College |
| Braden Sayles | IL | Hononegah | 2021 | OF | Wabash Valley JC |
| Dylan Scafuri | IL | Romeoville | 2021 | 1B | Illinois-Chicago |
| Mike Schicker | IL | Riverside-Brookfield | 2020 | C | Chattanooga State CC |
| Zachary Schwartz | IL | Elk Grove | 2020 | C | Concordia University (WI) |
| Christopher Seropian | IL | St. Laurence | 2020 | LHP | Fairleigh Dickinson |
| Rohan B Shah | IL | Lyons Township | 2020 | OF | The Citadel |
| Jack Shields | IL | Peoria Notre Dame | 2020 | OF | Illinois Central JC |
| Eddie Spoelman | IN | Illiana Christian | 2020 | RHP | Indiana Wesleyan University |
| Aidan Stewart | AL | Next Level Academy | 2021 | SS | Missouri |
| Cade Sullivan | IL | Metea Valley | 2020 | 3B | Western Michigan |
| Jacob Sullivan | IL | Brother Rice | 2020 | RHP | Southeastern CC (IA) |
| Nick Suspenzi | AZ | Desert Mountain | 2021 | RHP | San Diego |
| Logan Tabeling | IL | Tuscola | 2020 | RHP | Illinois |
| Zachary Taylor | IL | Stevenson | 2020 | C | |
| Will Tenuta | IL | Sandburg | 2020 | RHP | Purdue |
| Ryan Thiesse | IL | St. Charles North | 2020 | OF | Fordham |
| Isaiah Thompson | IL | Sacred Heart-Griffin | 2021 | OF | Indiana State |
| Trevor Thurston | IL | Marian Catholic | 2020 | C | Spoon River JC |
| Vytas Valincius | TN | Baylor | 2021 | 3B | Illinois |
| Kyle Walter | IL | Minooka | 2021 | RHP | Louisville |
| Kyle Washington | IL | Jacobs | 2021 | SS | Morton JC |
| Ryan Weaver | IL | Cary-Grove | 2021 | LHP | Illinois State |
| Dylan Whitney | IL | Oak Park-River Forest | 2020 | SS | Johns Hopkins University |
| Ben Wiegman | IL | Carmel Catholic | 2020 | RHP | Louisville |
| Dylan Wolff | IL | Joliet West | 2020 | RHP | Kankakee CC |
| Danny Wuestenfeld | IL | Joliet Catholic | 2020 | 1B | Central Michigan |
| John Zimmermann | IL | Metea Valley | 2021 | LHP |