| | | |
| May 7, 2026 | L | Gateway Grizzlies 2 at Mississippi Mud Monsters 5 | Final |
| May 8, 2026 | W | Gateway Grizzlies 6 at Mississippi Mud Monsters 5 | Final |
| May 9, 2026 | L | Gateway Grizzlies 4 at Mississippi Mud Monsters 9 | Final |
| May 12, 2026 | W | Joliet Slammers 3 at Gateway Grizzlies 6 | Final |
| May 13, 2026 | W | Joliet Slammers 3 at Gateway Grizzlies 11 | Final |
| May 14, 2026 | L | Joliet Slammers 14 at Gateway Grizzlies 5 | Final |
| May 15, 2026 | L | Windy City ThunderBolts 7 at Gateway Grizzlies 2 | Final |
| May 16, 2026 | W | Windy City ThunderBolts 7 at Gateway Grizzlies 10 | Final |
| May 17, 2026 | L | Windy City ThunderBolts 14 at Gateway Grizzlies 3 | Final |
| May 19, 2026 | L | Gateway Grizzlies 5 at Evansville Otters 15 | Final |
| May 20, 2026 | | Gateway Grizzlies at Evansville Otters | Ppd. |
| May 21, 2026 | L | Gateway Grizzlies 0 at Evansville Otters 3 (Game 1) | Final (7) |
| May 21, 2026 | L | Gateway Grizzlies 0 at Evansville Otters 1 (Game 2) | Final (7) |
| May 22, 2026 | W | Lake Erie Crushers 10 at Gateway Grizzlies 11 | Final |
| May 23, 2026 | L | Lake Erie Crushers 6 at Gateway Grizzlies 2 | Final |
| May 24, 2026 | W | Lake Erie Crushers 2 at Gateway Grizzlies 11 | Final |
| May 26, 2026 | W | Evansville Otters 3 at Gateway Grizzlies 7 | Final |
| May 27, 2026 | W | Evansville Otters 2 at Gateway Grizzlies 7 | Final |
| May 28, 2026 | L | Evansville Otters 8 at Gateway Grizzlies 2 | Final |
| May 29, 2026 | W | Gateway Grizzlies 16 at Joliet Slammers 2 | Final |
| May 30, 2026 | W | Gateway Grizzlies 7 at Joliet Slammers 4 | Final |
| May 31, 2026 | W | Gateway Grizzlies 7 at Joliet Slammers 5 | Final (10) |
| June 2, 2026 | L | Gateway Grizzlies 3 at Washington Wild Things 7 | Final |
| June 3, 2026 | L | Gateway Grizzlies 2 at Washington Wild Things 3 | Final |
| June 4, 2026 | W | Gateway Grizzlies 3 at Washington Wild Things 2 | Final (10) |
| June 5, 2026 | W | Mississippi Mud Monsters 0 at Gateway Grizzlies 3 | Final |
| June 6, 2026 | W | Mississippi Mud Monsters 5 at Gateway Grizzlies 13 | Final |
| June 7, 2026 | W | Mississippi Mud Monsters 5 at Gateway Grizzlies 6 | Final (10) |
| June 9, 2026 | W | Schaumburg Boomers 1 at Gateway Grizzlies 3 | Final |
| June 10, 2026 | W | Schaumburg Boomers 1 at Gateway Grizzlies 4 | Final |
| June 11, 2026 | L | Schaumburg Boomers 5 at Gateway Grizzlies 2 | Final |
| June 12, 2026 | W | Florence Y'alls 5 at Gateway Grizzlies 9 | Final |
| June 13, 2026 | L | Florence Y'alls 18 at Gateway Grizzlies 6 | Final |
| June 14, 2026 | L | Florence Y'alls 15 at Gateway Grizzlies 4 | Final |
| June 16, 2026 | L | Gateway Grizzlies 10 at Brockton Rox 13 | Final |
| June 17, 2026 | W | Gateway Grizzlies 11 at Brockton Rox 3 | Final |
| June 18, 2026 | W | Gateway Grizzlies 11 at Brockton Rox 7 | Final (7) |
| June 19, 2026 | L | Gateway Grizzlies 10 at New Jersey Jackals 11 | Final (10) |
| June 20, 2026 | L | Gateway Grizzlies 3 at New Jersey Jackals 8 | Final |
| June 21, 2026 | L | Gateway Grizzlies 4 at New Jersey Jackals 5 | Final |
| June 23, 2026 | L | Florence Y'alls 10 at Gateway Grizzlies 7 | Final |
| June 24, 2026 | L | Florence Y'alls 11 at Gateway Grizzlies 1 | Final |
| June 25, 2026 | | Florence Y'alls at Gateway Grizzlies | Ppd. |
| June 26, 2026 | W | Gateway Grizzlies 10 at Windy City ThunderBolts 1 | Final |
| June 27, 2026 | L | Gateway Grizzlies 2 at Windy City ThunderBolts 3 | Final |
| June 28, 2026 | W | Gateway Grizzlies 9 at Windy City ThunderBolts 5 | Final |
| June 30, 2026 | T | Gateway Grizzlies 5 at Mississippi Mud Monsters 5 | Final (MS wins ) |
| July 1, 2026 | L | Gateway Grizzlies 2 at Mississippi Mud Monsters 9 | Final |
| July 2, 2026 | W | Gateway Grizzlies 5 at Mississippi Mud Monsters 4 | Final |
| July 3, 2026 | L | Quebec Les Capitales 6 at Gateway Grizzlies 4 | Final |
| July 4, 2026 | L | Quebec Les Capitales 11 at Gateway Grizzlies 4 | Final |
| July 5, 2026 | L | Quebec Les Capitales 9 at Gateway Grizzlies 8 | Final |
| July 7, 2026 | W | Evansville Otters 1 at Gateway Grizzlies 16 | Final |
| July 8, 2026 | L | Evansville Otters 16 at Gateway Grizzlies 5 | Final |
| July 9, 2026 | L | Evansville Otters 4 at Gateway Grizzlies 2 | Final |
| July 10, 2026 | W | Gateway Grizzlies 8 at Schaumburg Boomers 5 | Final |
| July 11, 2026 | L | Gateway Grizzlies 2 at Schaumburg Boomers 8 | Final |
| July 12, 2026 | W | Gateway Grizzlies 4 at Schaumburg Boomers 3 | Final |
| July 17, 2026 | L | Gateway Grizzlies 4 at Lake Erie Crushers 6 | Final |
| July 18, 2026 | W | Gateway Grizzlies 7 at Lake Erie Crushers 0 | Final |
| July 19, 2026 | W | Gateway Grizzlies 12 at Lake Erie Crushers 4 | Final |
| July 21, 2026 | W | Gateway Grizzlies 8 at Florence Y'alls 7 | Final |
| July 22, 2026 | L | Gateway Grizzlies 2 at Florence Y'alls 7 | Final |
| July 23, 2026 | L | Gateway Grizzlies 3 at Florence Y'alls 5 | Final |
| July 24, 2026 | L | Lake Erie Crushers 8 at Gateway Grizzlies 5 | Final |
| July 25, 2026 | W | Lake Erie Crushers 0 at Gateway Grizzlies 7 | Final |
| July 26, 2026 | W | Lake Erie Crushers 1 at Gateway Grizzlies 9 | Final |
| July 28, 2026 | L | Windy City ThunderBolts 8 at Gateway Grizzlies 1 | Final |
| July 29, 2026 | W | Windy City ThunderBolts 7 at Gateway Grizzlies 16 | Final |
| July 30, 2026 | W | Windy City ThunderBolts 5 at Gateway Grizzlies 8 | Final |
| July 31, 2026 | L | Gateway Grizzlies 2 at Florence Y'alls 8 | Final |
| August 1, 2026 | L | Gateway Grizzlies 4 at Florence Y'alls 6 (Game 1) | Final (7) |
| August 1, 2026 | | Gateway Grizzlies at Florence Y'alls (Game 2) | Ppd. |
| August 2, 2026 | L | Gateway Grizzlies 4 at Florence Y'alls 7 (Game 1) | Final (7) |
| August 2, 2026 | L | Gateway Grizzlies 1 at Florence Y'alls 3 (Game 2) | Final (7) |
| August 4, 2026 | W | Schaumburg Boomers 5 at Gateway Grizzlies 6 | Final |
| August 5, 2026 | L | Schaumburg Boomers 8 at Gateway Grizzlies 7 | Final |
| August 6, 2026 | W | Schaumburg Boomers 1 at Gateway Grizzlies 7 | Final |
| August 7, 2026 | L | Joliet Slammers 5 at Gateway Grizzlies 2 | Final (10) |
| August 8, 2026 | W | Joliet Slammers 5 at Gateway Grizzlies 9 | Final |
| August 9, 2026 | L | Joliet Slammers 8 at Gateway Grizzlies 7 | Final |
| August 11, 2026 | L | Gateway Grizzlies 0 at Evansville Otters 6 | Final |
| August 12, 2026 | | Gateway Grizzlies at Evansville Otters | Ppd. |
| August 13, 2026 | L | Gateway Grizzlies 2 at Evansville Otters 3 (Game 1) | Final (8) |
| August 13, 2026 | L | Gateway Grizzlies 2 at Evansville Otters 3 (Game 2) | Final (7) |
| August 14, 2026 | W | Ottawa Titans 6 at Gateway Grizzlies 8 | Final |
| August 15, 2026 | W | Ottawa Titans 5 at Gateway Grizzlies 6 | Final |
| August 16, 2026 | L | Ottawa Titans 15 at Gateway Grizzlies 5 | Final |
| August 18, 2026 | L | Gateway Grizzlies 6 at Joliet Slammers 8 | Final |
| August 19, 2026 | T | Gateway Grizzlies 3 at Joliet Slammers 3 | Final (11) |
| August 20, 2026 | L | Gateway Grizzlies 2 at Joliet Slammers 4 | Final |
| August 21, 2026 | L | Gateway Grizzlies 4 at Windy City ThunderBolts 7 | Final |
| August 22, 2026 | W | Gateway Grizzlies 6 at Windy City ThunderBolts 4 | Final |
| August 23, 2026 | W | Gateway Grizzlies 9 at Windy City ThunderBolts 4 | Final |
| August 25, 2026 | L | Washington Wild Things 8 at Gateway Grizzlies 4 | Final |
| August 26, 2026 | W | Washington Wild Things 12 at Gateway Grizzlies 16 | Final |
| August 27, 2026 | L | Washington Wild Things 5 at Gateway Grizzlies 4 | Final |
| August 28, 2026 | L | Gateway Grizzlies 4 at Schaumburg Boomers 7 | Final |
| August 29, 2026 | L | Gateway Grizzlies 2 at Schaumburg Boomers 17 | Final |
| August 30, 2026 | W | Gateway Grizzlies 11 at Schaumburg Boomers 4 | Final |
| September 1, 2026 | L | Gateway Grizzlies 0 at Washington Wild Things 7 | Final |
| September 2, 2026 | L | Gateway Grizzlies 5 at Washington Wild Things 10 | Final |
| September 3, 2026 | | Gateway Grizzlies at Washington Wild Things | Cancelled |
| September 4, 2026 | W | Mississippi Mud Monsters 3 at Gateway Grizzlies 7 | Final |
| September 5, 2026 | W | Mississippi Mud Monsters 0 at Gateway Grizzlies 9 | Final |
| September 6, 2026 | L | Mississippi Mud Monsters 8 at Gateway Grizzlies 2 | Final |
Gateway Grizzlies Schedule
