Teams 
| Accomplishment | Date | |
|---|---|---|
| First game | Shea Stadium | 4/8/69 |
| First home game | Jarry Park | 4/14/69 |
| First hitter | Maury Wills | 4/8/69 |
| First pitcher | Jim "Mudcat" Grant | 4/8/69 |
| First hit | Bob Bailey | 4/8/69 |
| First run | Gary Sutherland | 4/8/69 |
| First walk | Mack Jones | 4/8/69 |
| First steal | Maury Wills | 4/8/69 (first inning) |
| First home run | Dan McGinn (solo shot in 3rd inning vs. Tom Seaver | 4/8/69 |
| First grand slam | Mack Jones (3rd inning vs. Jack Fisher) | 5/10/69 vs. Cincinnati |
| Winning pitcher | Don Shaw | 4/8/69 |
| First save | Carroll Sembera | 4/8/69 |
| First shutout | Bill Stoneman (no-hitter) | 4/17/69 @ Philadelphia |
| First winning season | 95-65 | 1979 |
| First .500 month | 15-15 | July, 1970 |
| First broadcasters | Dave Van Horne & Russ Taylor | CKGM |
