The 2021 Sea Dogs finished in the club's Top Five among team season leaders in 18 tracked statistical categories, including setting new club records in six stats and tying for the club record in two others. Team records include the 15 seasons of the club's history.
The team became the first to surpass a .300 batting average and the first to surpass a .400 on-base percentage. It doubled the previous home run total, tied the runs scored tally, and edged the previous RBI record by one. It also set new standards for slugging and fielding percentage.
| Stat | Value | Rank | Record (Year[s]) |
| Batting | .316 | 1st | .283 (2019) |
| On-Base Pct. | .425 | 1st | .379 (2020) |
| Slugging | .488 | 1st | .429 (2020) |
| Runs | 113 | 1st (t) | 113 (2012) |
| Triples | 3 | 2nd (t) | 5 (2015) |
| Home Runs | 12 | 1st | 6 (2008) |
| RBI | 95 | 1st | 94 (2008) |
| Hit by Pitch | 24 | 2nd | 25 (2012) |
| Sacrifice Flies | 6 | 2nd (t) | 8 (2015) |
| Strikeouts % | 20.6 | 4th | 15.0 (2017) |
| BB/SO | 0.68 | 5th | 1.06 (2017) |
| Stat | Value | Rank | Record (Year[s]) |
| ERA | 2.72 | 3rd | 1.93 (2017) |
| Shutouts | 2 | 1st (t) | Many |
| Hits / 9 IP | 6.99 | 3rd | 5.87 (2020) |
| BB / 9 IP | 3.50 | 3rd | 2.57 (2017) |
| SO / 9 IP | 10.88 | 3rd | 14.79 (2017) |
| SO / BB | 3.11 | 2nd | 5.75 (2017) |
| Stat | Value | Rank | Record (Year[s]) |
| Fielding Pct. | .951 | 1st | .947 (2017) |