The Pittsburgh Pirates Opening Day history is based upon the first game played at home during the regular season and includes (if applicable) the entire franchise history.
How many Pittsburgh Pirates Opening Day games were played in April? Have they ever played an Opening Day game in March? Have they even been shutout at home on Opening Day? We hope you enjoy using the charts below to review other similar Opening Day splits:
| Monthly Opening Day Splits | | Team vs Team Opening Day Splits |
| | | |
| Month (Games) | Won | Lost | WP | | Opponent (Games) | Won | Lost | WP |
| April (124) | 70 | 54 | 0.565 | | Atlanta Braves (1) | 0 | 1 | 0.000 |
| May (8) | 4 | 4 | 0.500 | | Brooklyn Dodgers (1) | 0 | 1 | 0.000 |
| | | Chicago Colts (1) | 0 | 1 | 0.000 |
| Score Related Opening Day Splits | | Chicago Cubs (20) | 10 | 10 | 0.500 |
| | | Chicago White Stockings (2) | 2 | 0 | 1.000 |
| Type (Games) | Won | Lost | WP | | Cincinnati Redlegs (1) | 0 | 1 | 0.000 |
| Shutouts (19) | 11 | 8 | 0.579 | | Cincinnati Reds (29) | 22 | 7 | 0.759 |
| 1-Run Games (41) | 30 | 11 | 0.732 | | Cleveland Spiders (2) | 1 | 1 | 0.500 |
| Blowouts (34) | 17 | 17 | 0.500 | | Colorado Rockies (2) | 0 | 2 | 0.000 |
| | | Detroit Wolverines (1) | 1 | 0 | 1.000 |
| | | Houston Astros (3) | 2 | 1 | 0.667 |
| | | Los Angeles Dodgers (3) | 1 | 2 | 0.333 |
| | | Louisville Colonels (3) | 3 | 0 | 1.000 |
| | | Milwaukee Braves (2) | 1 | 1 | 0.500 |
| | | Milwaukee Brewers (2) | 0 | 2 | 0.000 |
| | | Montreal Expos (7) | 1 | 6 | 0.143 |
| | | New York Giants (1) | 1 | 0 | 1.000 |
| | | New York Mets (4) | 2 | 2 | 0.500 |
| | | Philadelphia Athletics (2) | 0 | 2 | 0.000 |
| | | Philadelphia Phillies (11) | 7 | 4 | 0.636 |
| | | San Diego Padres (1) | 1 | 0 | 1.000 |
| | | San Francisco Giants (1) | 1 | 0 | 1.000 |
| | | St. Louis Brown Stockings (1) | 1 | 0 | 1.000 |
| | | St. Louis Browns (3) | 2 | 1 | 0.667 |
| | | St. Louis Cardinals (27) | 15 | 12 | 0.556 |
| | | St. Louis Perfectos (1) | 0 | 1 | 0.000 |
During their Opening Day history, the Pittsburgh Piratesscored the most runs (14) on April 22, 1892 versus the . The most runs scored against them during an Opening Day game was 13 and it was played on April 19, 1928 versus the .
