| Month | Game | Strat Date | + | Away | Pitcher | Balance | At | Home | Pitcher | Balance |
| September | 1 | 9/9/2018 | VRN | Freddy Peralta | 7L | At | SRD | Jose Urena | 5R | |
| September | 2 | 9/10/2018 | VRN | Zach Eflin | 3R | At | SRD | Yu Darvish | 2R | |
| September | 3 | 9/11/2018 | VRN | Jake Odorizzi | 5R | At | SRD | Homer Bailey | 5L | |
| September | 4 | 9/12/2018 | SRD | Jameson Taillon | 3L | At | NYY | Lucas Giolito | 4L | |
| September | 5 | 9/13/2018 | SRD | Adam Plutko | 1R | At | NYY | Trevor Bauer | 3R | |
| September | 6 | 9/14/2018 | SRD | Dallas Keuchel* | 4L | At | NYY | Mike Fiers | 1L | |
| September | OFF | 9/15/2018 | ||||||||
| September | 7 | 9/16/2018 | + | SRD | Yu Darvish | 2R | At | DYE | Eric Lauer* | 7R |
| September | 8 | 9/17/2018 | + | SRD | Homer Bailey | 5L | At | DYE | Tanner Roark | 3R |
| September | 9 | 9/18/2018 | + | SRD | Adam Plutko | 1R | At | DYE | Aaron Nola | E |
| September | 10 | 9/19/2018 | + | SRD | Dallas Keuchel* | 4L | At | DYE | Yonny Chirinos | 6L |
| September | 11 | 9/20/2018 | + | SRD | Chris Sale* | 3L | At | DYE | Jack Flaherty | 1R |
| September | 12 | 9/21/2018 | + | TAM | Shaun Anderson | 1R | At | SRD | Yu Darvish | 2R |
| September | 13 | 9/22/2018 | + | TAM | Jose Quintana* | 4L | At | SRD | Homer Bailey | 5L |
| September | 14 | 9/23/2018 | + | TAM | Ariel Jurado | 4L | At | SRD | Adam Plutko | 1R |
| September | 15 | 9/24/2018 | + | TAM | Chris Archer | 1L | At | SRD | Dallas Keuchel* | 4L |
| September | OFF | 9/25/2018 | ||||||||
| September | 16 | 9/26/2018 | SRD | Adrian Sampson | 7L | At | HMA | Aaron Sanchez | 2R | |
| September | 17 | 9/27/2018 | SRD | Homer Bailey | 5L | At | HMA | Sandy Alcantara | 2R | |
| September | 18 | 9/28/2018 | SRD | Adam Plutko | 1R | At | HMA | Lance Lynn | 2R | |
| September | 19 | 9/29/2018 | SRD | Jameson Taillon | 3L | At | WRK | Kenta Maeda | 2R | |
| September | 20 | 9/30/2018 | SRD | Chris Sale* | 3L | At | WRK | Dinelson Lamet | 1R | |
| September | 21 | 10/1/2018 | SRD | Adrian Sampson | 7L | At | WRK | Joey Lucchesi* | 2L | |
| September | 22 | 10/2/2018 | CUB | Julio Teheran | 2L | At | SRD | Dallas Keuchel* | 4L | |
| September | 23 | 10/3/2018 | CUB | Daniel Norris* | 1R | At | SRD | Adam Plutko | 1R | |
| September | 24 | 10/4/2018 | CUB | Jon Gray | 1R | At | SRD | Jameson Taillon | 3L | |
| + Indicates In Division Game | ||||||||||