| Earned-Run Average | ||||
| Lowest, Team, Playoffs | 2.00 | Québec | 2011 | |
| Highest, Team, Playoffs | 7.92 | Brockton | 2011 | |
| Lowest, Pitcher, Playoffs | 0.00 | Several | ||
| Games | ||||
| Most, Team, Playoffs | 10 | Several | ||
| Fewest, Team, Playoffs | 3 | Several | ||
| Most, Pitcher, Playoffs | 7 | Matt Kostalos | Rockland | 2016 |
| Games Started | ||||
| Most, Pitcher, Playoffs | 3 | Austin Chrismon Cory Jones | Ottawa Sussex County | 2016 2018 |
| Complete Games | ||||
| Most, Team, Playoffs | 3 | Sussex County | 2018 | |
| Most, Pitcher, Playoffs | 1 | Several | ||
| Shutouts | ||||
| Most, Pitcher, Playoffs | 1 | Several | ||
| Innings Pitched | ||||
| Most, Team, Playoffs | 92.2 | Rockland | 2016 | |
| Most, Pitcher, Playoffs | 25.0 | Cory Jones | Sussex County | 2018 |
| Wins | ||||
| Most, Team, Playoffs | 6 | Several | ||
| Most, Pitcher, Playoffs | 3 | Jay Johnson | Quebec | 2018 |
| Losses | ||||
| Most, Team, Playoffs | 5 | New Jersey Rockland | 2015 2016 |
|
| Most, Pitcher, Playoffs | 2 | Several | ||
| Saves | ||||
| Most, Team, Playoffs | 5 | New Jersey | 2015 | |
| Most, Pitcher, Playoffs | 5 | Hector Nelo | New Jersey | 2015 |
| Hits Allowed | ||||
| Fewest, Team, Playoffs | 26 | New Jersey | 2017 | |
| Fewest, Team, Series | 15 | Quebec | 2011 semifinals | |
| Fewest, Team, Game | 1 | Trois-Rivières | September 9, 2015 | |
| Most, Team, Playoffs | 118 | Rockland | 2016 | |
| Most, Team, Series (best-of-7) | 83 | Quebec | 2013 finals | |
| Most, Team, Series (best-of-5) | 65 | Rockland | 2016 finals | |
| Most, Team, Game | 22 | Quebec | September 6, 2018 | |
| Most, Pitcher, Playoffs | 26 | Cory Jones | Sussex County | 2018 |
| Most, Pitcher, Game | 11 | Chris Murphy | Trois-Rivières | September 5, 2018 |
| Runs Allowed | ||||
| Fewest, Team, Playoffs | 12 | Quebec | 2012 | |
| Fewest, Team, Series | 4 | New Jersey Quebec | 2011 semifinals 2011 semifinals |
|
| Most, Team, Playoffs | 66 | Rockland | 2016 | |
| Most, Team, Series (best-of-7) | 41 | New Jersey | 2013 finals | |
| Most, Team, Series (best-of-5) | 38 | Rockland | 2016 finals | |
| Most, Team, Game | 21 | Quebec | September 6, 2018 | |
| Most, Pitcher, Playoffs | 14 | Gabriel Perez | New Jersey | 2015 |
| Most, Pitcher, Game | 10 | Brett Lee | Quebec | September 6, 2018 |
| Earned Runs Allowed | ||||
| Fewest, Team, Playoffs | 10 | New Jersey | 2017 | |
| Fewest, Team, Series | 3 | Quebec | 2011 semifinals | |
| Most, Team, Playoffs | 56 | Rockland | 2016 | |
| Most, Team, Series (best-of-7) | 39 | Quebec | 2013 finals | |
| Most, Team, Series (best-of-5) | 31 | Rockland | 2016 finals | |
| Most, Team, Game | 21 | Quebec | September 6, 2018 | |
| Most, Pitcher, Playoffs | 13 | Gabriel Perez | New Jersey | 2015 |
| Most, Pitcher, Game | 10 | Brett Lee | Quebec | September 6, 2018 |
| Walks | ||||
| Fewest, Team, Playoffs | 10 | Pittsfield New Jersey | 2011 2012 |
|
| Fewest, Team, Series | 1 | Quebec | 2011 semifinals | |
| Most, Team, Playoffs | 41 | Rockland | 2016 | |
| Most, Team, Series (best-of-7) | 27 | New Jersey | 2013 finals | |
| Most, Team, Series (best-of-5) | 27 | Atlantic City | 2008 semifinals | |
| Most, Team, Game | 12 | Atlantic City | September 3, 2008 | |
| Most, Pitcher, Playoffs | 10 | Richard Salazar Cory Jones | Rockland Sussex County | 2014 2018 |
| Most, Pitcher, Game | 8 | Richard Salazar | Rockland | September 3, 2014 |
| Strikeouts | ||||
| Fewest, Team, Playoffs | 13 | New Jersey | 2010 | |
| Fewest, Team, Series | 10 | New Jersey | 2010 semifinals | |
| Most, Team, Playoffs | 91 | Ottawa | 2016 | |
| Most, Team, Series (best-of-7) | 59 | Rockland | 2014 finals | |
| Most, Team, Series (best-of-5) | 52 | Ottawa | 2016 finals | |
| Most, Team, Game | 16 | New Jersey | September 10, 2015 | |
| Most, Pitcher, Playoffs | 26 | Austin Chrismon | Ottawa | 2016 |
| Most, Pitcher, Game | 13 | Steve Borkowski | Ottawa | September 16, 2016 |
| Home Runs Allowed | ||||
| Fewest, Team, Playoffs | 1 | Several | ||
| Fewest, Team, Series | 0 | Several | ||
| Most, Team, Playoffs | 13 | Quebec | 2018 | |
| Most, Team, Series | 10 | North Shore | 2007 semifinals | |
| Most, Team, Game | 5 | New Jersey Quebec | September 6, 2007 September 6, 2018 |
|
| Most, Pitcher, Playoffs | 4 | Several | ||
| Most, Pitcher, Game | 4 | Mike Wlodarczyk | Brockton | September 9, 2010 |