69 || June 28 || @ Redlegs || 1–7 || Hal Jeffcoat (7–5) || Don Cardwell (3–5) || None || 16,848 || 36–31–2 |- style="background:#fbb" | 70 || June 29 || @ Redlegs || 3–8 || Tom Acker (9–3) || Robin Roberts (6–10) || None || 10,290 || 36–32–2 |- style="background:#fbb" | 71 || June 30 (1) || @ Redlegs || 1–6 || Brooks Lawrence (9–4) || Curt Simmons (7–4) || None || see 2nd game || 36–33–2 |- style="background:#fbb" | 72 || June 30 (2) || @ Redlegs || 2–6 || Johnny Klippstein (3–7) || Harvey Haddix (6–5) || Brooks Lawrence (1) || 32,584 || 36–34–2 |- |- style="background:#bfb" | 73 || July 1 || @ Pirates || 5–4 || Jim Hearn (2–1) || Bob Smith (0–2) || Seth Morehead (1) || 14,680 || 37–34–2 |- style="background:#bfb" | 74 || July 4 (1) || Giants || 2–1 || Harvey Haddix (7–5) || Rubén Gómez (10–6) || None || see 2nd game || 38–34–2 |- style="background:#bfb" | 75 || July 4 (2) || Giants || 6–2 || Curt Simmons (8–4) || Stu Miller (3–4) || Turk Farrell (3) ||| 30,442 || 39–34–2 |- style="background:#fbb" | 76 || July 5 || @ Dodgers || 5–6 || Roger Craig (3–5) || Robin Roberts (6–11) || Johnny Podres (1) || 13,324 || 39–35–2 |- style="background:#bfb" | 77 || July 6 || @ Dodgers || 9–4 || Jack Sanford (10–2) || Don Drysdale (6–6) || None || 8,939 || 40–35–2 |- style="background:#bfb" | 78 || July 7 (1) || @ Dodgers || 2–1 || Warren Hacker (4–2) || Sal Maglie (3–2) || Turk Farrell (4) || see 2nd game || 41–35–2 |- style="background:#bfb" | 79 || July 7 (2) || @ Dodgers || 5–3 || Jim Hearn (3–1) || Clem Labine (3–5) || Turk Farrell (5) || 16,805 || 42–35–2 |- style="background:#bbcaff;" | – || July 9 ||colspan="7" |1957 Major League Baseball All-Star Game at Sportsman's Park in St. Louis |- style="background:#bfb" | 80 || July 11 (1) || Cubs || 1–0 (11) || Harvey Haddix (8–5) || Bob Rush (1–8) || None || see 2nd game || 43–35–2 |- style="background:#bfb" | 81 || July 11 (2) || Cubs || 3–1 || Jack Sanford (11–2) || Don Elston (2–1) || None || 25,897 || 44–35–2 |- style="background:#fbb" | 82 || July 12 || Cubs || 2–5 || Jim Brosnan (1–3) || Robin Roberts (6–12)