| Month | Game | Strat Date | + | Away | Pitcher | Balance | At | Home | Pitcher | Balance |
| September | 1 | 9/9/2018 | WRK | Andrew Suarez* | 8L | At | DUB | Madison Bumgarner* | 2L | |
| September | 2 | 9/10/2018 | WRK | Joe Musgrove | 4R | At | DUB | Wei-Yin Chen* | 6L | |
| September | 3 | 9/11/2018 | WRK | Nathan Eovaldi | 2R | At | DUB | Paul Blackburn | 2R | |
| September | 4 | 9/12/2018 | SRD | Homer Bailey | 2R | At | WRK | Joey Lucchesi* | 4L | |
| September | 5 | 9/13/2018 | SRD | Alex Wood* | 1R | At | WRK | C.C. Sabathia* | 3L | |
| September | 6 | 9/14/2018 | SRD | Ian Kennedy | 2L | At | WRK | Andrew Suarez* | 8L | |
| September | OFF | 9/15/2018 | ||||||||
| September | 7 | 9/16/2018 | + | WRK | Joe Musgrove | 4R | At | COL | Clayton Kershaw* | 4R |
| September | 8 | 9/17/2018 | + | WRK | Joey Lucchesi* | 4L | At | COL | Tyler Mahle | 6R |
| September | 9 | 9/18/2018 | + | WRK | C.C. Sabathia* | 3L | At | COL | Dylan Bundy | 5R |
| September | 10 | 9/19/2018 | + | WRK | Andrew Suarez* | 8L | At | COL | James Shields | 5L |
| September | 11 | 9/20/2018 | + | WRK | Luke Weaver | 2R | At | COL | Andrew Heaney* | 4L |
| September | 12 | 9/21/2018 | + | HUC | Blake Snell* | 2L | At | WRK | Joe Musgrove | 4R |
| September | 13 | 9/22/2018 | + | HUC | Garrett Richards | 2L | At | WRK | Joey Lucchesi* | 4L |
| September | 14 | 9/23/2018 | + | HUC | Jake Arrieta | 3R | At | WRK | C.C. Sabathia* | 3L |
| September | 15 | 9/24/2018 | + | HUC | Jeremy Hellickson | 4L | At | WRK | Andrew Suarez* | 8L |
| September | OFF | 9/25/2018 | ||||||||
| September | 16 | 9/26/2018 | DYE | Daniel Mengden | 2L | At | WRK | Joe Musgrove | 4R | |
| September | 17 | 9/27/2018 | DYE | Ryan Borucki* | 1L | At | WRK | Joey Lucchesi* | 4L | |
| September | 18 | 9/28/2018 | DYE | Jack Flaherty | 3L | At | WRK | C.C. Sabathia* | 3L | |
| September | 19 | 9/29/2018 | CAL | Anibal Sanchez | 5L | At | WRK | Andrew Suarez* | 8L | |
| September | 20 | 9/30/2018 | CAL | Kyle Freeland* | 4L | At | WRK | Kyle Gibson | 1R | |
| September | 21 | 10/1/2018 | CAL | Zack Wheeler | 3R | At | WRK | Joe Musgrove | 4R | |
| September | 22 | 10/2/2018 | WRK | Joey Lucchesi* | 4L | At | OAK | Brad Keller | 3R | |
| September | 23 | 10/3/2018 | WRK | C.C. Sabathia* | 3L | At | OAK | Jaime Barria | 6L | |
| September | 24 | 10/4/2018 | WRK | Andrew Suarez* | 8L | At | OAK | Anthony Desclafani | 6R | |
| + Indicates In Division Game | ||||||||||