The San Francisco Giants 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 San Francisco Giants 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 (127) | 73 | 52 | 0.584 | | Atlanta Braves (3) | 2 | 1 | 0.667 |
| May (4) | 4 | 0 | 1.000 | | Baltimore Orioles (2) | 2 | 0 | 1.000 |
| | | Boston Beaneaters (8) | 4 | 4 | 0.500 |
| Score Related Opening Day Splits | | Boston Bees (3) | 2 | 1 | 0.667 |
| | | Boston Braves (13) | 8 | 4 | 0.667 |
| Type (Games) | Won | Lost | WP | | Boston Doves (1) | 1 | 0 | 1.000 |
| Shutouts (20) | 12 | 8 | 0.600 | | Brooklyn Bridegrooms (1) | 0 | 1 | 0.000 |
| 1-Run Games (38) | 25 | 13 | 0.658 | | Brooklyn Dodgers (10) | 6 | 4 | 0.600 |
| Blowouts (32) | 22 | 10 | 0.688 | | Brooklyn Robins (5) | 2 | 3 | 0.400 |
| | | Brooklyn Superbas (6) | 3 | 3 | 0.500 |
| | | Chicago Cubs (4) | 2 | 2 | 0.500 |
| | | Chicago White Stockings (1) | 1 | 0 | 1.000 |
| | | Florida Marlins (2) | 2 | 0 | 1.000 |
| | | Houston Astros (5) | 2 | 3 | 0.400 |
| | | Houston Colt .45s (1) | 1 | 0 | 1.000 |
| | | Los Angeles Dodgers (7) | 3 | 4 | 0.429 |
| | | Milwaukee Braves (2) | 2 | 0 | 1.000 |
| | | Milwaukee Brewers (2) | 2 | 0 | 1.000 |
| | | New York Mets (1) | 1 | 0 | 1.000 |
| | | Philadelphia Phillies (22) | 11 | 11 | 0.500 |
| | | Pittsburgh Pirates (6) | 3 | 3 | 0.500 |
| | | San Diego Padres (20) | 13 | 7 | 0.650 |
| | | St. Louis Cardinals (4) | 3 | 1 | 0.750 |
| | | Washington Senators (2) | 1 | 0 | 1.000 |
During their Opening Day history, the San Francisco Giantsscored the most runs (16) on April 14, 1915 versus the . The most runs scored against them during an Opening Day game was 16 and it was played on April 5, 1983 versus the .
