| 67 || June 20 || @ Reds || 1–11 || Jim O'Toole (13–3) || Art Mahaffey (3–9) || Jim Owens (2) || 7,077 || 30–37 |- style="background:#fbb" | 68 || June 21 || @ Mets || 1–3 || Al Jackson (6–7) || Cal McLish (5–4) || None || 11,047 || 30–38 |- style="background:#bfb" | 69 || June 22 || @ Mets || 2–0 || Ray Culp (9–5) || Roger Craig (2–11) || None || 16,791 || 31–38 |- style="background:#fbb" | 70 || June 23 (1) || @ Mets || 0–5 || Carl Willey (6–6) || Dallas Green (1–2) || None || see 2nd game || 31–39 |- style="background:#fbb" | 71 || June 23 (2) || @ Mets || 1–4 || Tracy Stallard (3–4) || Ryne Duren (2–2) || Al Jackson (1) || 19,901 || 31–40 |- style="background:#bfb" | 72 || June 25 || @ Pirates || 5–4 (10) || Johnny Klippstein (3–3) || Harvey Haddix (2–3) || Dennis Bennett (1) || 12,365 || 32–40 |- style="background:#bfb" | 73 || June 26 || @ Pirates || 6–2 || Cal McLish (6–4) || Bob Friend (9–6) || None || 9,153 || 33–40 |- style="background:#bfb" | 74 || June 27 || @ Pirates || 13–4 || Ray Culp (10–5) || Don Cardwell (3–9) || Johnny Klippstein (2) || 9,576 || 34–40 |- style="background:#fbb" | 75 || June 28 || Cubs || 3–4 (11) || Dick Ellsworth (10–6) || Jack Baldschun (5–4) || None || 9,653 || 34–41 |- style="background:#bbb" | – || June 29 || Cubs || colspan=6 | Postponed (rain); Makeup: August 14 as a traditional double-header |- style="background:#bfb" | 76 || June 30 || Cubs || 3–2 || Art Mahaffey (4–9) || Larry Jackson (9–7) || Johnny Klippstein (3) || 6,006 || 35–41 |- |- style="background:#fbb" | 77 || July 1 (1) || Pirates || 1–2 || Don Cardwell (4–9) || Ray Culp (10–6) || None || see 2nd game || 35–42 |- style="background:#bfb" | 78 || July 1 (2) || Pirates || 8–1 || Cal McLish (7–4) || Earl Francis (3–3) || None || 21,661 || 36–42 |- style="background:#fbb" | 79 || July 2 || Pirates || 2–3 || Vern Law (2–3) || Dallas Green (1–3) || Al McBean (4) || 6,844 || 36–43 |- style="background:#bfb" | 80 || July 4 (1) || Pirates || 1–0 (10) || Art Mahaffey (5–9) || Bob Friend (10–7) || None || see