Underclass Showcase
- PBRPlus Illinois Underclass Showcase: Top Overall Prospects 11/17/17
- IL Underclass Showcase: Pitching Analysis 11/16/17
- IL Underclass Showcase: Infield Analysis 11/15/17
- IL Underclass Showcase: Outfield Analysis 11/14/17
- IL Underclass Showcase: Catching Analysis 11/13/17
- IL Underclass Showcase: Statistical Analysis 10/24/17
- IL Underclass Showcase: Quick Hits 10/23/17
- IL Underclass Showcase: Preview 10/18/17
| 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 |
| Cord Babcock | IL | Grant | 2020 | LHP | |
| Marc Babicz | IL | St. Laurence | 2020 | OF | Lake Land JC |
| Nathan Barney | IL | Loyola | 2020 | OF | |
| Alex Barrera | IL | Homewood-Flossmoor | 2021 | 3B | |
| Carter Berg | IL | St Rita | 2020 | SS | |
| Clay Billadeau | IL | Metea Valley | 2020 | C | |
| Alan Brown | IL | Oak Park-River Forest | 2020 | OF | Morehouse College |
| Jake Buczkowski | IL | Riverside-Brookfield | 2021 | RHP | |
| Sam Buduris | IL | Minooka | 2020 | OF | Benedictine University (IL) |
| Zachary Burhans | IL | DePaul College Prep | 2020 | 3B | Illinois Wesleyan University |
| Nathaniel Campbell | IL | Oswego East | 2020 | OF | |
| Connor Cassady | IL | Lyons Township | 2020 | RHP | Bowdoin College |
| Abe Collins | IL | Morton | 2020 | OF | Carl Sandburg JC |
| Samuel Corbett | IL | Maine South | 2020 | LHP | North Central College |
| Camden Cowger | IL | Edwards County | 2020 | SS | Olney Central JC |
| Isaac Crabb | IL | Harrisburg | 2020 | RHP | Wabash Valley JC |
| Tyler Cwik | IL | York | 2020 | OF | Grace College |
| Kyle Czarnecki | IL | Minooka | 2020 | C | Kankakee CC |
| Ernie Day | IL | Taft | 2020 | RHP | Iowa Western CC |
| Mitchell Dollah | IL | Stagg | 2020 | C | |
| Jordan Donato | IL | Triad | 2021 | C | |
| Dylan Engel | IL | Marian Catholic | 2020 | 2B | Illinois Wesleyan University |
| George Evangelopoulos | IL | Stagg | 2021 | LHP | Milwaukee School of Engineering |
| Charlie Evans | IL | St Rita | 2021 | 3B | |
| Patrick Faith | IL | St. Charles North | 2021 | SS | |
| Jacob Ferry | IL | Oswego East | 2020 | OF | Morehead State |
| Davey Fitzpatrick | IL | Lincoln-Way East | 2020 | 3B | Lewis University |
| Matt Flaherty | IL | Lake Zurich | 2020 | C | Triton JC |
| Bode Gebbink | IL | St. Joseph | 2020 | LHP | Westminster College (MO) |
| Chase Gil | IL | Minooka | 2020 | 1B | |
| Johnny Gonsalves | IL | Tinley Park | 2020 | SS | McHenry County JC |
| John Gunartt | IL | Niles West | 2020 | OF | |
| John Hanson | IL | Neuqua Valley | 2020 | LHP | |
| Brady Hartman | IL | Sherrard | 2021 | SS | Illinois Wesleyan University |
| Nicholas Hemken | IL | Edwardsville | 2020 | C | Truman State University |
| Cooper Herold | IL | Minooka | 2020 | RHP | John A. Logan JC |
| Al Holguin | IL | St Rita | 2021 | 1B | USC Upstate |
| Tre Hondras | IL | Homewood-Flossmoor | 2020 | OF | John A. Logan JC |
| Jimmy Huizenger | IL | Downers Grove South | 2020 | LHP | |
| Tyler Jones | IL | Streamwood | 2020 | 3B | Dominican University (IL) |
| Tom Jurack | IL | Hinsdale Central | 2020 | OF | Illinois |
| Tommy Kelly | IL | Peoria Notre Dame | 2020 | 3B | Belmont Abbey College |
| Alex Kelsch | IL | Oswego East | 2020 | 2B | Loras College |
| Mason Kottmeyer | IL | Kaneland | 2020 | RHP | Michigan State |
| Eric Lopez | IL | Curie | 2021 | OF | |
| Ryan Maloney | IL | Providence Catholic | 2020 | 1B | Clark State CC |
| Teddy Mamone | IL | Stagg | 2020 | LHP | |
| Noah Manning | IL | Minooka | 2020 | RHP | Iowa Western CC |
| Marcus Maristela | IL | Grayslake Central | 2020 | SS | McHenry County JC |
| Pedro Martinez | SD | N/A | 2020 | RHP | |
| Sean McDevitt | IL | St Rita | 2020 | SS | |
| Alec McGinnis | IL | Normal West | 2020 | SS | Augustana College (IL) |
| Alex Mendez | IL | St. Ignatius College Prep | 2021 | RHP | |
| Brandon Micetich | IL | Plainfield Central | 2020 | OF | Southwestern Illinois JC |
| Anthony Mondt | IL | St Rita | 2021 | 3B | |
| Aaron Montgomery | IL | Woodstock North | 2020 | C | |
| Frankie Morales | IL | Roberto Clemente | 2020 | 2B | Benedictine University (IL) |
| Ernesto Moreno | IL | DePaul College Prep | 2020 | SS | |
| Jacob Mote | IL | Normal University | 2020 | SS | Marshall |
| Mitchell Murphy | IL | Normal Community | 2021 | 3B | Iona |
| Andrew Mysliwiec | IL | Minooka | 2020 | OF | |
| Jaylon Nauden | IL | Marian Catholic | 2021 | SS | Butler |
| Raymond Nepras | IL | Wheaton Warrenville South | 2020 | SS | |
| Donavan Noble | IL | Brooks | 2020 | SS | South Suburban JC |
| William O'Boyle | IL | Marist | 2020 | SS | North Central College |
| Michael Orozco | IL | Stagg | 2020 | SS | |
| Zach Pawlak | IL | Plainfield South | 2020 | 3B | |
| Michael Pawyza | IL | Lockport | 2020 | 3B | McHenry County JC |
| Colton Powell | IL | Plainfield North | 2020 | RHP | |
| Anthony Pullano | IL | Maine South | 2021 | LHP | Concordia University-Chicago |
| Austin Pullara | IL | Coal City | 2020 | 3B | |
| Carlos Quintero | IL | St Rita | 2020 | RHP | |
| Alexander Reyno | IL | John Hancock College Preparatory High School | 2023 | 1B | |
| Alex Rodriguez | IL | Bradley-Bourbonnais | 2020 | RHP | Valparaiso |
| Owen Roesel | IL | Joliet Catholic | 2020 | OF | |
| Jake Rybka | IL | Providence Catholic | 2021 | C | |
| Luis Salinas | IL | St. Ignatius | 2020 | RHP | |
| Sam Sanchez | IL | Geneva | 2020 | RHP | Augustana College (IL) |
| Braden Sayles | IL | Hononegah | 2021 | OF | Wabash Valley JC |
| Dylan Scafuri | IL | Romeoville | 2021 | 1B | Illinois-Chicago |
| Henry Schuler | IL | Joliet Catholic | 2020 | RHP | Lewis University |
| Zachary Schwartz | IL | Elk Grove | 2020 | C | Concordia University (WI) |
| Luke Sefcik | IL | Marist | 2021 | SS | Central Michigan |
| Cade Sharp | IL | Mercer County | 2020 | 3B | Monmouth College |
| Ryan St. Ledger | IA | Rend Lake College | 2021 | OF | Rend Lake JC |
| Colin Summerhill | IL | Loyola Academy | 2020 | C | Triton JC |
| Mitchell Svetov | IL | Highland Park | 2020 | LHP | |
| Adrian Swiech | IL | Andrew | 2020 | SS | |
| Zachary Taylor | IL | Stevenson | 2020 | C | |
| Will Tenuta | IL | Sandburg | 2020 | RHP | Purdue |
| Trevor Thurston | IL | Marian Catholic | 2020 | C | Spoon River JC |
| Frank Tirone | IL | Oak Park-River Forest | 2021 | C | |
| Ryan Tribe | IL | St Rita | 2020 | SS | Illinois Wesleyan University |
| Cade Turner | IL | Lincoln-Way East | 2020 | RHP | Illinois-Springfield |
| Ben Vitas | IL | Providence Catholic | 2020 | SS | Central Michigan |
| Kyle Walter | IL | Minooka | 2021 | RHP | Louisville |
| Zachary Ward | IL | Lincoln-Way Central | 2020 | RHP | Navy |
| Sean Wepfer | IL | Oswego East | 2020 | OF | Triton JC |
| Dylan Whitney | IL | Oak Park-River Forest | 2020 | SS | Johns Hopkins University |
| Conor Wright | IL | Joliet Catholic | 2020 | ||
| Danny Wuestenfeld | IL | Joliet Catholic | 2020 | 1B | Central Michigan |