3–4 || Kinley (3–1) || Iglesias (2–10) || — || 6,466 || 63–70 || L1 |-style="background:#bbb |—||August 30|| @ Cardinals || colspan="8" |Postponed (rain) (Makeup date: September 1) |-style="background:#fbb |134||August 31 (1)|| @ Cardinals || 6–10 || Hudson (14–6) || Bauer (10–12) || — || 44,738 || 63–71 || L2 |-style="background:#fbb |135||August 31 (2)|| @ Cardinals || 2–3 || Gant (10–0) || Iglesias (2–11) || — || 42,074 || 63–72 || L3 |- |-style="background:#fbb |136||September 1 (1)|| @ Cardinals || 3–4 || Martínez (4–2) || Lorenzen (0–4) || — || 43,692 || 63–73 || L4 |-style="background:#bfb |137||September 1 (2)|| @ Cardinals || 5–3 || Castillo (14–5) || Ponce de Leon (1–2) || Iglesias (28) || 38,665 || 64–73 || W1 |-style="background:#fbb |138||September 2|| Phillies || 1–7 || Smyly (3–6) || DeSclafani (9–8) || — || 19,631 || 64–74 || L1 |-style="background:#fbb |139||September 3|| Phillies || 2–6 || Vincent (1–2) || Garrett (4–2) || — || 11,452 || 64–75 || L2 |-style="background:#bfb |140||September 4|| Phillies || 8–5 || Lorenzen (1–4) || Álvarez (3–4) || Iglesias (29) || 13,448 || 65–75 || W1 |-style="background:#bfb |141||September 5|| Phillies || 4–3 || Bowman (2–0) || Vincent (1–3) || — || 13,230 || 66–75 || W2 |-style="background:#fbb |142||September 6|| Diamondbacks || 5–7 || Ginkel (1–0) || Mahle (2–11) || Bradley (13) || 19,048 || 66–76 || L1 |-style="background:#fbb |143||September 7|| Diamondbacks || 0–2 || Young (7–3) || Castillo (14–6) || Sherfy (1) || 34,804 || 66–77 || L2 |-style="background:#bfb |144||September 8|| Diamondbacks || 4–3 || Iglesias (3–11) || López (2–6) || — || 19,717 || 67–77 || W1 |-style="background:#fbb |145||September 10|| @ Mariners || 3–4 || Altavilla (1–0) || Garrett (4–3) || Bass (3) || 12,230 || 67–78 || L1 |-style="background:#fbb |146||September 11|| @ Mariners || 3–5 || Gonzales (15–11) || Gray (10–7) || Bass (4) || 10,152 || 67–79 || L2 |-style="background:#bfb |147||September 12|| @ Mariners || 11–5 || Romano (1–0) || Altavilla (1–1) || — || 15,564 || 68–79 || W1 |-style="background:#bfb |148||September 13|| @ Diamondbacks || 4–3 || Castillo (15–6) || Leake (11–11) || Iglesias (30) || 35,158 || 69–79 || W2 |-style="background:#fbb |149||September 14|| @ Diamondbacks || 0–1 || Kelly (11–14) || DeSclafani (9–9) || Bradley (14) || 35,151 || 69–80 || L1 |-style="background:#bfb |150||September 15|| @ Diamondbacks || 3–1 || Bauer (11–12) || Gallen (3–6) || Iglesias (31) || 25,193 || 70–80 || W1 |-style="background:#fbb |151||September 16|| @ Cubs ||