| Date | Transaction |
| 02-28-2023 | John Stofa has retired from football. |
| 09-13-2020 | The Montreal Mastodon have automatically waived John Stofa to comply with the 53-man roster limit. |
| 11-17-2019 | The Montreal Mastodon have moved Virgil Carter to the active roster. The Montreal Mastodon have moved John Stofa to the inactive roster. |
| 11-03-2019 | The Montreal Mastodon have moved John Stofa to the active roster. The Montreal Mastodon have moved Virgil Carter to the inactive roster. |
| 11-03-2019 | The Montreal Mastodon have acquired John Stofa from the waiver wire. |
| 10-13-2019 | The Cleveland Ironmen have automatically waived John Stofa to comply with the 53-man roster limit. |
| 10-07-2019 | The Cleveland Ironmen have acquired John Stofa from the waiver wire. |
| 10-07-2019 | The Cleveland Ironmen have waived John Stofa. |
| 10-07-2019 | The Cleveland Ironmen have acquired John Stofa from the waiver wire. |
| 09-02-2019 | The St. Louis Cardinals have waived John Stofa. |
| 09-02-2019 | The St. Louis Cardinals have moved Jerome Bolcar, John Tabor, and Mike Tyler to the active roster. The St. Louis Cardinals have moved Jeff Serwanga, Bob Plummer, and John Stofa to the inactive roster. |
| 04-28-2019 | The St. Louis Cardinals have moved John Stofa to the active roster. The St. Louis Cardinals have moved John Tabor to the inactive roster. |
| 04-28-2019 | The St. Louis Cardinals have acquired John Stofa from the waiver wire. |
| 01-13-2019 | The Cleveland Ironmen have automatically waived John Stofa to comply with the 53-man roster limit. |
| 12-31-2018 | The Cleveland Ironmen have acquired John Stofa from the waiver wire. |
| 12-09-2018 | The Cleveland Ironmen have automatically waived John Stofa to comply with the 53-man roster limit. |
| 12-03-2018 | The Cleveland Ironmen have acquired John Stofa from the waiver wire; however, as he was traded or waived after the deadline and has not spent a full week on the wire, he will not be eligible for the postseason. |
| 12-03-2018 | The Cleveland Ironmen have waived John Stofa. |
| 12-03-2018 | The Cleveland Ironmen have acquired John Stofa from the waiver wire; however, as he was traded or waived after the deadline and has not spent a full week on the wire, he will not be eligible for the postseason. |
| 12-03-2018 | The Cleveland Ironmen have waived John Stofa. |
| 12-03-2018 | The Cleveland Ironmen have acquired John Stofa from the waiver wire. |
| 12-02-2018 | The Cleveland Ironmen have automatically waived John Stofa to comply with the 53-man roster limit. |
| 11-26-2018 | The Cleveland Ironmen have acquired John Stofa from the waiver wire; however, as he was traded or waived after the deadline and has not spent a full week on the wire, he will not be eligible for the postseason. |
| 11-26-2018 | The Cleveland Ironmen have waived John Stofa. |
| 11-26-2018 | The Cleveland Ironmen have acquired John Stofa from the waiver wire. |
| 11-25-2018 | The Cleveland Ironmen have automatically waived John Stofa to comply with the 53-man roster limit. |
| 11-19-2018 | The Cleveland Ironmen have acquired John Stofa from the waiver wire; however, as he was traded or waived after the deadline and has not spent a full week on the wire, he will not be eligible for the postseason. |
| 11-19-2018 | The Cleveland Ironmen have waived John Stofa. |
| 11-19-2018 | The Cleveland Ironmen have acquired John Stofa from the waiver wire. |
| 11-18-2018 | The Cleveland Ironmen have automatically waived John Stofa to comply with the 53-man roster limit. |
| 11-12-2018 | The Cleveland Ironmen have acquired John Stofa from the waiver wire; however, as he was traded or waived after the deadline and has not spent a full week on the wire, he will not be eligible for the postseason. |
| 11-12-2018 | The Cleveland Ironmen have waived John Stofa. |
| 11-12-2018 | The Cleveland Ironmen have acquired John Stofa from the waiver wire. |
| 10-28-2018 | The Cleveland Ironmen have automatically waived John Stofa to comply with the 53-man roster limit. |
| 10-22-2018 | The Cleveland Ironmen have acquired John Stofa from the waiver wire. |
| 10-21-2018 | The New England Red Soxx have automatically waived John Stofa to comply with the 53-man roster limit. |
| 09-17-2018 | Trade #89110 has been completed between the Cleveland Ironmen and the New England Red Soxx. The New England Red Soxx receive John Stofa (QB) from the Cleveland Ironmen in exchange for Draft Pick - 2021 Round 6 (NE). |
| 09-17-2018 | The Cleveland Ironmen have changed Jim London's name to John Stofa. |
| 09-17-2018 | The Cleveland Ironmen have acquired Jim London from the waiver wire. |
| 09-10-2018 | The Providence Devine have waived Jim London. |
| 09-10-2018 | The Providence Devine have acquired Jim London from the waiver wire. |
| 09-03-2018 | The St. Louis Cardinals have waived Jim London. |
| 09-03-2018 | The St. Louis Cardinals have moved John Tabor, Jerome Bolcar, and Mike Tyler to the active roster. The St. Louis Cardinals have moved Jamal Ta'amu and Jim London to the inactive roster. |
| 04-29-2018 | The St. Louis Cardinals have moved Jeff Boyd and Jim London to the active roster. The St. Louis Cardinals have moved John Tabor and Ted Walker to the inactive roster. |
| 09-04-2017 | The St. Louis Cardinals have moved John Tabor, Charlie Weiner, John Mesner, Billy Avery, and Mike Tyler to the active roster. The St. Louis Cardinals have moved Herb Garden, Jim London, Randy Harper, and Vern Kennedy to the inactive roster. |
| 08-07-2017 | The St. Louis Cardinals have moved Jim London to the active roster. The St. Louis Cardinals have moved John Tabor to the inactive roster. |
| 08-07-2017 | The St. Louis Cardinals have acquired Jim London from the waiver wire. |
| 08-08-2016 | The New England Red Soxx have waived Jim London. |
| 08-30-2015 | The New England Red Soxx have acquired Jim London from the waiver wire. |
| 08-27-2012 | The Miami Cobras have waived Jim London. |
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