September 5 || @ Pirates || 12–5 || Herm Wehmeier (8–10) || Laurin Pepper (1–3) || None || 4,645 || 65–69 |- style="background:#fbb" | 135 || September 6 (1) || Giants || 4–8 || Don Liddle (7–3) || Murry Dickson (9–17) || Marv Grissom (16) || see 2nd game || 65–70 |- style="background:#bfb" | 136 || September 6 (2) || Giants || 5–4 (11) || Robin Roberts (21–13) || Al Worthington (0–2) || None || 35,272 || 66–70 |- style="background:#fbb" | 137 || September 7 || Giants || 1–3 (11) || Rubén Gómez (14–9) || Curt Simmons (12–14) || Hoyt Wilhelm (7) || 13,535 || 66–71 |- style="background:#fbb" | 138 || September 8 || Redlegs || 3–9 || Frank Smith (5–7) || Murry Dickson (9–18) || None || 3,913 || 66–72 |- style="background:#bbb" | – || September 10 || Cubs || colspan=6 | Postponed (rain); Makeup: September 11 as a double-header |- style="background:#bfb" | 139 || September 11 (1) || Cubs || 3–0 || Herm Wehmeier (9–10) || Jim Davis (10–7) || None || 3,913 || 67–72 |- style="background:#bfb" | 140 || September 11 (2) || Cubs || 8–2 || Bob Miller (7–9) || Howie Pollet (8–9) || None || 1,642 || 68–72 |- style="background:#bfb" | 141 || September 12 (1) || Braves || 5–2 || Murry Dickson (10–18) || Warren Spahn (19–11) || None || 3,913 || 69–72 |- style="background:#fbb" | 142 || September 12 (2) || Braves || 1–2 || Lew Burdette (14–12) || Robin Roberts (21–14) || None || 17,598 || 69–73 |- style="background:#fbb" | 143 || September 13 || Braves || 4–7 || Dave Jolly (9–6) || Curt Simmons (12–15) || None || 11,189 || 69–74 |- style="background:#fbb" | 144 || September 14 || Cardinals || 2–5 || Brooks Lawrence (13–6) || Ron Mrozinski (0–1) || None || 5,157 || 69–75 |- style="background:#fbb" | 145 || September 15 || Cardinals || 1–3 || Tom Poholsky (4–6) || Herm Wehmeier (9–11) || None || 1,997 || 69–76 |- style="background:#bfb" | 146 || September 17 || @ Giants || 4–3 || Robin Roberts (22–14) || Johnny Antonelli (21–6) || None || 11,540 || 70–76 |- style="background:#fbb" | 147 || September 18 || @ Giants || 1–9 || Don Liddle (8–4) || Murry Dickson (10–19) || Marv Grissom (17) || 7,988 || 70–77 |- style="background:#bbb" | – || September 19 || @ Giants || colspan=6 | Postponed (rain); Makeup: