| 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 | CRC | Sonny Gray | 1L | At | VRN | Gerrit Cole | 1L | |
| September | 5 | 9/13/2018 | CRC | Stephen Strasburg | 3L | At | VRN | Max Scherzer | 6R | |
| September | 6 | 9/14/2018 | CRC | Marco Gonzales* | 5R | At | VRN | Daniel Ponce De Leon | 5L | |
| September | OFF | 9/15/2018 | ||||||||
| September | 7 | 9/16/2018 | DUB | Madison Bumgarner* | 5L | At | VRN | Gerrit Cole | 1L | |
| September | 8 | 9/17/2018 | DUB | Shane Bieber | 1R | At | VRN | Brett Anderson* | 5L | |
| September | 9 | 9/18/2018 | DUB | Dakota Hudson | 3R | At | VRN | Alex Young* | 3L | |
| September | 10 | 9/19/2018 | VRN | Max Scherzer | 6R | At | CHI | Jesse Chavez | 4L | |
| September | 11 | 9/20/2018 | VRN | Gerrit Cole | 1L | At | CHI | Aaron Civale | 3R | |
| September | 12 | 9/21/2018 | VRN | Jake Odorizzi | 5R | At | CHI | Cam Bedrosian | 4L | |
| September | 13 | 9/22/2018 | NYY | Luis Castillo | 1R | At | VRN | Zach Eflin | 3R | |
| September | 14 | 9/23/2018 | NYY | Lucas Giolito | 4L | At | VRN | Freddy Peralta | 7L | |
| September | 15 | 9/24/2018 | NYY | Trevor Bauer | 3R | At | VRN | Max Scherzer | 6R | |
| September | OFF | 9/25/2018 | ||||||||
| September | 16 | 9/26/2018 | + | VRN | Brett Anderson* | 5L | At | HUC | Zack Greinke | 2L |
| September | 17 | 9/27/2018 | + | VRN | David Price* | 1L | At | HUC | Jeff Samardzija | 3R |
| September | 18 | 9/28/2018 | + | VRN | Cole Hamels* | 1L | At | HUC | Wilmer Font | 4R |
| September | 19 | 9/29/2018 | + | VRN | Drew Pomeranz* | 4L | At | HUC | Sam Tuivailala | 4R |
| September | 20 | 9/30/2018 | + | VRN | Alex Young* | 3L | At | HUC | Mike Minor* | 1R |
| September | 21 | 10/1/2018 | + | COL | Tyler Mahle | 4R | At | VRN | Brett Anderson* | 5L |
| September | 22 | 10/2/2018 | + | COL | Zac Gallen | E | At | VRN | Jake Odorizzi | 5R |
| September | 23 | 10/3/2018 | + | COL | Chris Bassitt | E | At | VRN | Max Scherzer | 6R |
| September | 24 | 10/4/2018 | + | COL | Dylan Bundy | E | At | VRN | Gerrit Cole | 1L |
| + Indicates In Division Game | ||||||||||