The 1980 Pittsburgh Pirates season was the 99th season of the Pittsburgh Pirates franchise; the 94th in the National League. After winning the World Series the previous year, the Pirates finished third in the National League East with a record of 83–79, eight games behind the World Series Champion Philadelphia Phillies.
On August 11, the Pirates led the division by 6 games over the Phillies, but from August 25 to September 9 they lost 13 of 15 games to fall out of first place.
Regular season
Season standings
Record vs. opponents
Game log
|- bgcolor="ffbbbb" | 1 || || @ Cardinals || 0–1 || Vuckovich || Blyleven (0–1) || — || 42,867 || 0–1 |- bgcolor="ccffcc" | 2 || || @ Cardinals || 4–3 || Jackson (1–0) || Hood || — || 16,998 || 1–1 |- bgcolor="ccffcc" | 3 || || @ Cardinals || 7–2 || Bibby (1–0) || Fulgham || — || 15,662 || 2–1 |- bgcolor="ccffcc" | 4 || || @ Cardinals || 3–0 || Rooker (1–0) || Martinez || Jackson (1) || 16,301 || 3–1 |- bgcolor="ccffcc" | 5 || April 14 || Cubs || 5–4 (10) || Tekulve (1–0) || Sutter || — || 44,088 || 4–1 |- bgcolor="ffbbbb" | 6 || || Cardinals || 9–12 || Sykes || Candelaria (0–1) || — || 5,233 || 4–2 |- bgcolor="ccffcc" | 7 || || Cardinals || 12–10 || Jackson (2–0) || Knowles || Tekulve (1) || 10,196 || 5–2 |- bgcolor="ffbbbb" | 8 || || Cardinals || 1–2 || Fulgham || Roberts (0–1) || — || 12,642 || 5–3 |- bgcolor="ccffcc" | 9 || || Cardinals || 6–3 || Rooker (2–0) || Vuckovich || Tekulve (2) || 35,567 || 6–3 |- bgcolor="ccffcc" | 10 || April 21 || @ Expos || 7–1 || Candelaria (1–1) || Grimsley || — || 10,327 || 7–3 |- bgcolor="ccffcc" | 11 || April 22 || @ Expos || 5–3 || Bibby (2–0) || Sanderson || Tekulve (3) || 7,373 || 8–3 |- bgcolor="ffbbbb" | 12 || April 23 || @ Expos || 2–3 || Rogers || Blyleven (0–2) || — || 8,161 || 8–4 |- bgcolor="ffbbbb" | 13 || April 25 || @ Cubs || 3–5 || Reuschel || Rooker (2–1) || Sutter || 7,714 || 8–5 |- bgcolor="ccffcc" | 14 || April 26 || @ Cubs || 9–2 || Candelaria (2–1) || Lamp || — || 32,992 || 9–5 |- bgcolor="ccffcc" | 15 || April 29 || Expos || 5–4 (10) || Solomon (1–0) || Sosa || — || 8,498 || 10–5 |- bgcolor="ccffcc" | 16 || April 30 || Expos || 5–0 || Bibby (3–0) || Lee || — || 8,545 || 11–5
|- bgcolor="ccffcc" | 17 || May 1 || Expos || 2–1 (10) || Tekulve (2–0) || Fryman || — || 8,426 || 12–5 |- bgcolor="ffbbbb" | 18 || || Braves || 1–6 || Niekro || Rooker (2–2) || — || 11,476 || 12–6 |- bgcolor="ffbbbb" | 19 || || Braves || 1–3 (10) || Hrabosky || Jackson (2–1) || — || 34,104 || 12–7 |- bgcolor="ccffcc" | 20 || || Braves || 13–4 || Bibby (4–0) || Boggs || — || 14,358 || 13–7 |- bgcolor="ccffcc" | 21 || || Dodgers || 2–1 || Tekulve (3–0) || Howe || — || 9,817 || 14–7 |- bgcolor="ccffcc" | 22 || || Dodgers || 7–6 || Tekulve (4–0) || Hough || — || 11,404 || 15–7 |- bgcolor="ccffcc" | 23 || || @ Padres || 4–3 || Tekulve (5–0) || Fingers || — || 34,078 || 16–7 |- bgcolor="ccffcc" | 24 || || @ Padres || 9–5 || Robinson (1–0) || Rasmussen || Romo (1) || 18,168 || 17–7 |- bgcolor="ffbbbb" | 25 || || @ Padres || 0–5 || Jones || Candelaria (2–2) || — || 22,522 || 17–8 |- bgcolor="ffbbbb" | 26 || May 13 || @ Giants || 0–5 || Blue || Blyleven (0–3) || — || 13,798 || 17–9 |- bgcolor="ccffcc" | 27 || May 14 || @ Giants || 3–2 || Bibby (5–0) || Knepper || Tekulve (4) || 8,734 || 18–9 |- bgcolor="ccffcc" | 28 || May 15 || @ Giants || 3–2 (12) || Romo (1–0) || Griffin || — || 7,781 || 19–9 |- bgcolor="ffbbbb" | 29 || || @ Dodgers || 6–8 || Reuss || Tekulve (5–1) || Sutcliffe || 47,929 || 19–10 |- bgcolor="ffbbbb" | 30 || || @ Dodgers || 1–3 || Sutton || Blyleven (0–4) || Howe || 50,082 || 19–11 |- bgcolor="ffbbbb" | 31 || || @ Dodgers || 0–2 || Welch || Bibby (5–1) || Howe || 49,867 || 19–12 |- bgcolor="ccffcc" | 32 || || Padres || 4–3 || Romo (2–0) || Fingers || — || || 20–12 |- bgcolor="ccffcc" | 33 || || Padres || 3–2 || Jackson (3–1) || Curtis || Tekulve (5) || 17,301 || 21–12 |- bgcolor="ffbbbb" | 34 || || Padres || 4–6 || Shirley || Tekulve (5–2) || Fingers || 12,496 || 21–13 |- bgcolor="ccffcc" | 35 || May 23 || Giants || 5–4 (13) || Jackson (4–1) || Holland || — || 9,619 || 22–13 |- bgcolor="ffbbbb" | 36 || May 24 || Giants || 9–10 (15) || Griffin || Scurry (0–1) || — || 11,591 || 22–14 |- bgcolor="ffbbbb" | 37 || May 25 || Giants || 2–5 || Blue || Candelaria (2–3) || — || 42,626 || 22–15 |- bgcolor="ffbbbb" | 38 || May 26 || @ Phillies || 6–7 || Reed || Tekulve (5–3) || — || 45,394 || 22–16 |- bgcolor="ccffcc" | 39 || May 27 || @ Phillies || 3–2 (13) || Romo (3–0) || Noles || Tekulve (6) || 35,989 || 23–16 |- bgcolor="ffbbbb" | 40 || May 28 || @ Phillies || 3–6 || Lerch || Robinson (1–1) || Reed || 30,209 || 23–17 |- bgcolor="ccffcc" | 41 || May 29 || @ Phillies || 5–4 || Solomon (2–0) || Ruthven || Romo (2) || 30,630 || 24–17 |- bgcolor="ffbbbb" | 42 || May 30 || Mets || 1–5 (6) || Zachry || Candelaria (2–4) || — || 17,101 || 24–18 |- bgcolor="ccffcc" | 43 || May 31 || Mets || 5–0 || Blyleven (1–4) || Swan || — || 13,901 || 25–18
|- bgcolor="ccffcc" | 44 || June 1 || Mets || 13–3 || Bibby (6–1) || Falcone || — || 49,626 || 26–18 |- bgcolor="ccffcc" | 45 || June 2 || Phillies || 9–3 || Robinson (2–1) || Lerch || — || 19,990 || 27–18 |- bgcolor="ccffcc" | 46 || June 3 || Phillies || 4–3 || Jackson (5–1) || McGraw || — || 22,141 || 28–18 |- bgcolor="ffbbbb" | 47 || June 4 || Phillies || 3–4 || Carlton || Candelaria (2–5) || — || 31,075 || 28–19 |- bgcolor="ffbbbb" | 48 || June 6 || @ Mets || 4–9 || Hausman || Blyleven (1–5) || — || 18,352 || 28–20 |- bgcolor="ffbbbb" | 49 || June 7 || @ Mets || 5–6 (11) || Allen || Jackson (5–2) || — || 13,509 || 28–21 |- bgcolor="ffbbbb" | 50 || June 8 || @ Mets || 4–6 || Burris || Romo (3–1) || Glynn || || 28–22 |- bgcolor="ccffcc" | 51 || June 8 || @ Mets || 3–0 || Solomon (3–0) || Bomback || Tekulve (7) || 29,329 || 29–22 |- bgcolor="ccffcc" | 52 || June 10 || @ Reds || 5–3 || Candelaria (3–5) || Soto || Tekulve (8) || 26,648 || 30–22 |- bgcolor="ffbbbb" | 53 || June 11 || @ Reds || 2–3 || Pastore || Blyleven (1–6) || — || 29,211 || 30–23 |- bgcolor="ccffcc" | 54 || June 12 || @ Reds || 10–6 || Bibby (7–1) || LaCoss || Romo (3) || 31,557 || 31–23 |- bgcolor="ccffcc" | 55 || June 13 || Astros || 5–3 || Solomon (4–0) || Niekro || Tekulve (9) || 31,854 || 32–23 |- bgcolor="ffbbbb" | 56 || June 14 || Astros || 3–7 || Ryan || Robinson (2–2) || LaCorte || 33,922 || 32–24 |- bgcolor="ccffcc" | 57 || June 15 || Astros || 4–1 || Candelaria (4–5) || Forsch || — || 49,541 || 33–24 |- bgcolor="ccffcc" | 58 || June 16 || Reds || 5–3 || Blyleven (2–6) || Pastore || Jackson (2) || 19,940 || 34–24 |- bgcolor="ffbbbb" | 59 || June 17 || Reds || 3–4 || Moskau || Romo (3–2) || — || 25,565 || 34–25 |- bgcolor="ffbbbb" | 60 || || @ Braves || 2–3 || Garber || Tekulve (5–4) || — || || 34–26 |- bgcolor="ffbbbb" | 61 || || @ Braves || 4–5 || Camp || Romo (3–3) || Garber || 17,154 || 34–27 |- bgcolor="ffbbbb" | 62 || || @ Braves || 3–4 || Matula || Robinson (2–3) || Bradford || 10,585 || 34–28 |- bgcolor="ffbbbb" | 63 || June 20 || @ Astros || 4–6 || Forsch || Candelaria (4–6) || Sambito || 35,955 || 34–29 |- bgcolor="ffbbbb" | 64 || June 21 || @ Astros || 2–4 || Ruhle || Blyleven (2–7) || Sambito || 45,867 || 34–30 |- bgcolor="ccffcc" | 65 || June 22 || @ Astros || 2–1 || Bibby (8–1) || Niekro || Jackson (3) || 46,213 || 35–30 |- bgcolor="ffbbbb" | 66 || || @ Cardinals || 1–6 || Kaat || Solomon (4–1) || — || 20,422 || 35–31 |- bgcolor="ffbbbb" | 67 || || @ Cardinals || 2–3 || Sykes || Rhoden (0–1) || — || 21,858 || 35–32 |- bgcolor="ffbbbb" | 68 || || @ Cardinals || 1–4 || Hood || Candelaria (4–7) || Seaman || 26,102 || 35–33 |- bgcolor="ccffcc" | 69 || June 27 || @ Expos || 6–4 || Romo (4–3) || Rogers || Robinson (1) || 44,232 || 36–33 |- bgcolor="ccffcc" | 70 || June 28 || @ Expos || 4–3 || Bibby (9–1) || Lea || Romo (4) || 38,065 || 37–33 |- bgcolor="ffbbbb" | 71 || June 29 || @ Expos || 1–4 || Palmer || Solomon (4–2) || Norman || 46,186 || 37–34 |- bgcolor="ccffcc" | 72 || || Cardinals || 5–4 || Romo (5–3) || Hood || — || 16,591 || 38–34
|- bgcolor="ccffcc" | 73 || || Cardinals || 3–2 (10) || Jackson (6–2) || Kaat || — || 17,006 || 39–34 |- bgcolor="ffbbbb" | 74 || || Cardinals || 5–7 (11) || Urrea || Scurry (0–2) || — || 15,250 || 39–35 |- bgcolor="ccffcc" | 75 || July 3 || Cubs || 5–3 || Bibby (10–1) || Krukow || Jackson (4) || 14,062 || 40–35 |- bgcolor="ffbbbb" | 76 || July 4 || Cubs || 2–4 || McGlothen || Solomon (4–3) || Sutter || || 40–36 |- bgcolor="ffbbbb" | 77 || July 4 || Cubs || 1–2 || Capilla || Robinson (2–4) || Tidrow || 24,668 || 40–37 |- bgcolor="ccffcc" | 78 || July 5 || Cubs || 5–4 || Candelaria (5–7) || Hernandez || Romo (5) || 46,372 || 41–37 |- bgcolor="ccffcc" | 79 || July 6 || Cubs || 5–4 (20) || Bibby (11–1) || Lamp || — || 25,994 || 42–37 |-style=background:#bbbfff |colspan=10|51st All-Star Game in Los Angeles, California |- bgcolor="ffbbbb" | 80 || July 10 || @ Mets || 0–2 || Zachry || Candelaria (5–8) || — || 21,540 || 42–38 |- bgcolor="ccffcc" | 81 || July 11 || @ Mets || 4–2 || Blyleven (3–7) || Swan || Tekulve (10) || 30,907 || 43–38 |- bgcolor="ffbbbb" | 82 || July 12 || @ Phillies || 4–5 || Saucier || Tekulve (5–5) || — || 53,254 || 43–39 |- bgcolor="ccffcc" | 83 || July 13 || @ Phillies || 7–3 || Robinson (3–4) || Espinosa || Tekulve (11) || 48,132 || 44–39 |- bgcolor="ccffcc" | 84 || July 14 || @ Phillies || 13–11 || Jackson (7–2) || Reed || — || 44,245 || 45–39 |- bgcolor="ccffcc" | 85 || July 15 || Giants || 5–2 || Candelaria (6–8) || Knepper || Tekulve (12) || 17,114 || 46–39 |- bgcolor="ccffcc" | 86 || July 16 || Giants || 3–1 || Blyleven (4–7) || Whitson || Jackson (5) || 18,226 || 47–39 |- bgcolor="ccffcc" | 87 || July 17 || Giants || 3–2 || Tekulve (6–5) || Holland || — || 25,508 || 48–39 |- bgcolor="ccffcc" | 88 || || Dodgers || 6–4 || Rhoden (1–1) || Welch || Romo (6) || 30,131 || 49–39 |- bgcolor="ccffcc" | 89 || || Dodgers || 7–3 || Solomon (5–3) || Sutcliffe || — || 28,731 || 50–39 |- bgcolor="ffbbbb" | 90 || || Dodgers || 2–4 || Hooton || Candelaria (6–9) || Howe || || 50–40 |- bgcolor="ccffcc" | 91 || || Dodgers || 8–7 || Jackson (8–2) || Castillo || — || 41,932 || 51–40 |- bgcolor="ccffcc" | 92 || || @ Padres || 4–3 || Bibby (12–1) || Lucas || Tekulve (13) || 17,504 || 52–40 |- bgcolor="ffbbbb" | 93 || || @ Padres || 2–3 || Fingers || Romo (5–4) || — || 14,608 || 52–41 |- bgcolor="ccffcc" | 94 || || @ Padres || 7–1 || Blyleven (5–7) || Shirley || — || 15,746 || 53–41 |- bgcolor="ccffcc" | 95 || July 25 || @ Giants || 5–1 || Candelaria (7–9) || Knepper || — || 22,830 || 54–41 |- bgcolor="ffbbbb" | 96 || July 26 || @ Giants || 3–4 (10) || Minton || Jackson (8–3) || — || 28,566 || 54–42 |- bgcolor="ccffcc" | 97 || July 27 || @ Giants || 6–4 || Bibby (13–1) || Bordley || Tekulve (14) || 31,186 || 55–42 |- bgcolor="ccffcc" | 98 || || @ Dodgers || 6–4 || Rhoden (2–1) || Welch || Tekulve (15) || 46,973 || 56–42 |- bgcolor="ffbbbb" | 99 || || @ Dodgers || 2–10 || Hooton || Blyleven (5–8) || — || 47,013 || 56–43 |- bgcolor="ffbbbb" | 100 || || @ Dodgers || 0–3 || Reuss || Candelaria (7–10) || — || 50,308 || 56–44
|- bgcolor="ffbbbb" | 101 || || Padres || 0–1 || Mura || Bibby (13–2) || Fingers || 22,304 || 56–45 |- bgcolor="ffbbbb" | 102 || || Padres || 2–5 || Curtis || Rhoden (2–2) || — || || 56–46 |- bgcolor="ffbbbb" | 103 || || Padres || 1–4 || Shirley || Robinson (3–5) || Fingers || 20,517 || 56–47 |- bgcolor="ffbbbb" | 104 || August 5 || @ Cubs || 3–11 || Reuschel || Candelaria (7–11) || — || 22,939 || 56–48 |- bgcolor="ccffcc" | 105 || August 6 || @ Cubs || 9–7 || Tekulve (7–5) || Tidrow || Romo (7) || || 57–48 |- bgcolor="ccffcc" | 106 || August 6 || @ Cubs || 2–0 || Blyleven (6–8) || Capilla || Jackson (6) || 24,305 || 58–48 |- bgcolor="ccffcc" | 107 || August 7 || @ Cubs || 11–3 || Solomon (6–3) || Hernandez || — || 28,364 || 59–48 |- bgcolor="ccffcc"