| Month | Game | Strat Date | + | Away | Pitcher | Balance | At | Home | Pitcher | Balance |
| September | 1 | 9/9/2018 | CRC | Drew Pomeranz* | 4L | At | SYI | Chase Anderson | 4L | |
| September | 2 | 9/10/2018 | CRC | Sonny Gray | 2L | At | SYI | German Marquez | 5R | |
| September | 3 | 9/11/2018 | CRC | Michael Fulmer | 2R | At | SYI | Charlie Morton | 1R | |
| September | 4 | 9/12/2018 | HOH | Sean Manaea* | 1L | At | CRC | Matt Harvey | E | |
| September | 5 | 9/13/2018 | HOH | Freddy Peralta | 9R | At | CRC | Stephen Strasburg | 1R | |
| September | 6 | 9/14/2018 | HOH | Ty Blach* | 1R | At | CRC | Sean Newcomb* | 1R | |
| September | OFF | 9/15/2018 | ||||||||
| September | 7 | 9/16/2018 | + | CAL | Wade Leblanc* | 1R | At | CRC | Sonny Gray | 2L |
| September | 8 | 9/17/2018 | + | CAL | Kyle Freeland* | 4L | At | CRC | Michael Fulmer | 2R |
| September | 9 | 9/18/2018 | + | CAL | Patrick Corbin* | 4R | At | CRC | Matt Harvey | E |
| September | 10 | 9/19/2018 | + | CAL | Zack Wheeler | 3R | At | CRC | Jose Urena | 3R |
| September | 11 | 9/20/2018 | + | CAL | Anibal Sanchez | 5L | At | CRC | Marco Gonzales* | 1R |
| September | 12 | 9/21/2018 | + | CRC | Sonny Gray | 2L | At | BUR | Mike Minor* | 5R |
| September | 13 | 9/22/2018 | + | CRC | Michael Fulmer | 2R | At | BUR | Zack Greinke | 2L |
| September | 14 | 9/23/2018 | + | CRC | Matt Harvey | E | At | BUR | Carlos Rodon* | 7R |
| September | 15 | 9/24/2018 | + | CRC | Sean Newcomb* | 1R | At | BUR | J.A. Happ* | 6L |
| September | OFF | 9/25/2018 | ||||||||
| September | 16 | 9/26/2018 | + | CRC | Jose Urena | 3R | At | DUB | Wei-Yin Chen* | 6L |
| September | 17 | 9/27/2018 | + | CRC | Michael Fulmer | 2R | At | DUB | Paul Blackburn | 2R |
| September | 18 | 9/28/2018 | + | CRC | Sonny Gray | 2L | At | DUB | Matt Strahm* | 5R |
| September | 19 | 9/29/2018 | + | CRC | Matt Harvey | E | At | DUB | Madison Bumgarner* | 2L |
| September | 20 | 9/30/2018 | + | CRC | Stephen Strasburg | 1R | At | DUB | Tyler Skaggs* | 1L |
| September | 21 | 10/1/2018 | + | BUR | Brett Anderson* | 2L | At | CRC | Marco Gonzales* | 1R |
| September | 22 | 10/2/2018 | + | BUR | Mike Minor* | 5R | At | CRC | Michael Fulmer | 2R |
| September | 23 | 10/3/2018 | + | BUR | Zack Greinke | 2L | At | CRC | Sonny Gray | 2L |
| September | 24 | 10/4/2018 | + | BUR | J.A. Happ* | 6L | At | CRC | Matt Harvey | E |
| + Indicates In Division Game | ||||||||||