Chris Hetu inherited Cody Marshall's 2024 roster.

Rule 2.2.4.1 was modified, capping all undrafted players at a keeper draft round value of the fifteenth round.

Logan Camillo left the league mid-season. Rick Dunlop took over his roster.

Rule 3.2.2 was established, awarding the manager(s) of the MLB Home Run Derby champion and the MLB All-Star Game MVP an extra move during the extended week.

Rule 3.5.5.1 was established, requiring at least one manager involved in a two-part trade to notify the league of the full trade in the group chat.

Rule 4.1.1 was modified, increasing Home Runs from four (4) to five (5) points and eliminating Grounded Into Double Plays.

Rule 4.1.2 was modified, increasing Saves from three (3) to five (5) points and Holds from three (3) to five (5) points.

Rule 5.4.2 was established, creating harsher penalties for managers breaking the roster mandate in the playoffs.

John Inguagiato won his second PLFB Championship.

Divisions were eliminated.

• Rule 5.2 was modified, now stating that the top eight teams by overall standings will make the playoffs.

Brendan Davis won his third PLFB Championship.

The league was reduced to fourteen teams as Dylan Davies and Ders Velischek were contracted.

The league alignment was reduced to two divisions with pre-determined alignments.

Rules 3.4.1 - 3.4.5 were established, creating penalties for breaking the roster mandate.

Rule 3.5.4 was established, further defining "renting" players.

Rule 4.1.2 was modified, increasing Saves from two (2) to three (3) points and increasing Holds from two (2) to three (3) points.

Rule 5.4.1 was established, granting waiver priority in the playoffs to all managers in the Championship Bracket over all managers in the Consolation Bracket.

Ryan Florentine won his second PLFB Championship.

Rule 3.1 was modified, adding one (1) Catcher slot.

Rule 4.1.1 was modified, decreasing Stolen Bases from two (2) points to one (1) point, decreasing Caught Stealing from negative half (-0.5) a point to negative one (-1) point, increasing Intentional Walks from a quarter (0.25) of a point to one (1) point, decreasing Grounded Into Double Plays from negative half (-0.5) a point to negative one (-1) point, and decreasing Grand Slams from four (4) points to one (1) point.

Rule 4.1.2 was modified, eliminating points for Wins, Losses, and Complete Games; decreasing Saves from five (5) to two (2) points, increasing Earned Runs from negative two (-2) points to negative one (-1) point, and decreasing Holds from four (4) to two (2) points.

Eric Hannmann won his fifth PLFB Championship, becoming the first manager to win five championships and the first manager to win three consecutive championships.

The league expanded to sixteen teams to include Dylan Davies and Eric Miele (returning for his third stint).

The league alignment expanded to four divisions.

Rule 2.2.4.1 was modified, changing the draft round value of undrafted players from the twenty-fifth round five rounds lower than that manager's next lowest keeper.

Rule 4.1.2 was modified, increasing the value of Holds from two (2) to four (4) points.

Every player kept for the 2020 season received an additional year of keeper eligibility.

Due to the COVID-19 pandemic-shortened season, the PLFB schedule was reduced to six regular season weeks.

• Each manager played the three other managers in his division twice.

• The top two managers of each division advanced to the post-season.

Eric Hannmann won his fourth PLFB Championship, becoming the first manager to win four championships.

Ders Velischek inherited Ryan Cutino's 2018 roster.

Rule 3.2 was modified as the amount of moves allotted to each managers in a single week was reduced from six to five.

Rule 3.3 was modified as the waiver period for players dropped from a manager's roster was redeuced from five days to three days.

Eric Hannmann won his third PLFB Championship.

Cody Marshall and Trent Pickett inherited Mike James' and Matt Hogan's 2017 rosters respectively.

Rule 3.1 was modified, increasing Disabled List slots from three (3) to four (4) and removing all Catcher slots.

Rule 3.4 was implemented, establishing the roster mandate.

Rule 3.5.3 was modified, eliminating the trade limit for all managers.

Rule 4.1.1 was modified substantially.

Rule 4.1.2 was modified substantially.

Jason Moragas won his third PLFB Championship, becoming the first manager to win three championships.

Jie Chen, Ryan Coughlin, James Florentine, Patrick Kiernan, Eric Miele, and Ryan Parry were contracted, while Logan Camillo, Ryan Cutino, Matt Hogan, and Mike James were added to bring the team-total back to fourteen.

League alignment was reduced to two divisions.

Rule 2.2.9 was established, prohibiting the trading of potential keeper players during the off-season.

Rule 2.2.10 was established, introducing the Expansion Draft.

Mike Andranovich won his first PLFB Championship.

Michael Eccleston inherited Royce Duda's 2015 roster.

The league expanded to sixteen teams with Eric Miele and Ryan Coughlin each returning for their second stints.

Rule 2.3 was modified, eliminating draft pick trading.

Rule 3.5.3 was established, creating a 12-trade limit for each manager.

Rule 4.1.1 was modified substantially.

Rule 4.1.2 was modified, decreasing Hits Allowed from negative one (-1) point to negative half (-0.5) a point.

League alignment expanded to four divisions.

Eric Hannmann won his second PLFB Championship.

Ryan Coughlin, Rick Dunlop, Paul Eligio, and Mike Marrerios were replaced by Mike Andranovich, Royce Duda, Ryan Parry, and Jie Chen (returning for his second stint).

League alignment reduced to two divisions.

Rule 2.2 was established, introducing keeper players.

Rule 3.5.1 was established stipulating managers may not trade players for any value external to fantasy baseball.

Rule 3.5.2 was modified, shifting the trade deadline to the second week of August.

Ryan Florentine won his first PLFB Championship.

The league expanded to fourteen teams as Jason Alderisio and Alec Creta were replaced by Ryan Coughlin, Rick Dunlop, Paul Eligio, James Florentine, and Mike Marrerios.

Rule 3.1 was modified, increasing Outfielder slots from three (3) to four (4), decreasing Starting Pitcher slots from five (5) to four (4), decreasing Bench slots from six (6) to five (5), and adding one (1) Infielder slot.

Rule 3.5.2 was established, creating a trade deadline at the end of August.

Three divisions were established.

Rivalry weeks were included in the schedule.

Eric Hannmann won his first PLFB Championship.

Jason Moragas returned for his second stint as Commissioner.

The league expanded to eleven teams as David Anekstein, Jie Chen, and Dan Dorman were replaced by Jason Alderisio, Alec Creta, Ryan Florentine, Eric Hannmann, Patrick Kiernan, and Tony Pagliaro.

• A non-competitive filler team was also added to balance the schedule.

Rule 2.3 was introduced, allowing managers to trade draft picks.

Rule 4.1.1 was modified, eliminating the Hit stat and adding Singles at half (0.5) a point, Doubles at one (1) point, Triples at two (2) points, and Double Plays Turned at half (0.5) a point.

Casey Shaw won his first PLFB Championship.

Brendan Davis returned for his second stint as Commissioner.

Vincent Aldazabal, Eric Miele, and Matt Reed were replaced by Dan Dorman and Casey Shaw, and David Anekstein (returning for his second stint).

Jason Moragas won his second PLFB Championship.

Jason Moragas became the third Commissioner in league history.

David Anekstein, John Esposito, and Chris Fezza were contracted, while Aaron Snyder was added to bring the team-total to eight.

Rule 3.1 was modified, increasing Starting Pitcher slots from four (4) to five (5) and Bench slots from five (5) to six (6).

Rule 4.1.1 was modified substantially.

Rule 4.1.2 was modified substantially.

Brendan Davis won his second PLFB Championship, becoming the first manager to win two championships and the first to win two consecutive championships.

Jason Constant, Nick Felezzola, and Dan Palmieri were replaced by John Esposito, Chris Fezza (each returning for his second stint), and Jie Chen.

Rule 3.1 was modified, decreasing Catcher slots from two (2) to one (1), increasing Outfielder slots from two (2) to three (3), decreasing Utility slots from three (3) to two (2), decreasing Relief Pitcher slots from three (3) to two (2), increasing Pitcher slots from one (1) to two (2), decreasing Bench slots from six (6) to five (5), adding two (2) Disabled List slots, and eliminating all Infiedler, Left Fielder, Center Fielder, and Right Fielder slots.

Rule 4 was established as the league switched from a category scoring system to a points scoring system.

Brendan Davis won his first PLFB Championship.

Brendan Davis became the second Commissioner in league history.

John Esposito, Chris Fezza, and Devind Kullar were replaced by David Anekstein, Jason Constant, and Eric Miele.

Rule 3.1 was modified, increasing Catcher slots from one (1) to two (2), increasing Infielder slots from one (1) to (2), adding two (2) Outfielder slots, increasing Utility slots from two (2) to three (3), increasing Starting Pitcher slots from two (2) to four (4), increasing Relief Pitcher slots from two (2) to three (3), decreasing Pitcher slots from three (3) to one (1), and increasing Bench slots from five (5) to six (6).

Rule 4.1.1 was modified, adding the Sacrifice Fly, Walk, Intentional Walk, On-Base Percentage, Slugging Percentage, Extra-Base Hit, Grand Slam, and Outfield Assist categories, as well as eliminating the On-Base Plus Slugging category.

Rule 4.1.2 was modified, adding the Innings Pitched, Walk, Grounded Into Double Play, Win Percentage, No-Hitter, and Perfect Game categories.

Jason Moragas won his first PLFB Championship.

The Pioneer League of Fantasy Baseball was founded with Nick Felezzola as Commissioner after the decision was made to start anew after the controversial events in a separate precursor league in 2007. 

• The league name derives from the mascot of New Providence High School in New Providence, NJ.

The ten managers in the inaugural season were Vincent Aldazabal, Brendan Davis, John Esposito, Nick Felezzola, Chris Fezza, John Inguagiato, Devind Kullar, Jason Moragas, Dan Palmieri, and Matt Reed.

John Inguagiato won his first PLFB Championship.