On January 22, Forge FC announced they had transferred reigning CPL golden boot winner and player of the year Tristan Borges to Belgian First Division B side Oud-Heverlee Leuven for a fee reported to be close to $300,000.

Genk academy product Paolo Sabak, former Montreal Impact and Canada men's national soccer team fullback Maxim Tissot, and former Toronto FC attacker Molham Babouli.

[7][8] On July 29, the CPL announced a revised, shortened season format to be played exclusively at the University of Prince Edward Island from August 13 to September 19 in a bio-secure bubble.

[20] Following the season, captain Kyle Bekker was named the CPL's Player of the Year and goalkeeper Triston Henry was awarded the Golden Glove.

On August 7, CONCACAF announced they had rescheduled the tournament to begin play on October 20 and conclude on January 28, 2021.

[24] Due to travel restrictions introduced in response to the COVID-19 pandemic, all rounds of the tournament were played as single leg ties hosted by the higher seeded team.

David Choinière struck first for the Hammers, opening the scoring in the 21st minute before the Salvadorans tied the game later in the first half.

Forge took an early lead once again, this time from a goal by Molham Babouli, before Tauro equalized in the 18th minute.

[31][32] David Choinière drew a penalty just before halftime which Daniel Krutzen scored to give Forge the lead, however Arcahaie capitalized on a Triston Henry error in the 57th minute to tie the game.

[33][34] Arcahaie's goalkeeper made two saves while their penalty takers converted all of their kicks to defeat Forge 4–2, knocking the Hammers out of the CONCACAF League.

[36] This was centre-back David Edgar's final professional match as he had announced that he would retire at the end of the year.

[37][38] Marathón took the lead in the 18th minute from a header off of a free kick which proved to be the only goal in a 1–0 final, qualifying the Hondurans for the Champions League at Forge's expense.

Forge FC unveiled its 2020 primary kit on February 27 at an event hosted at Tim Hortons Field.

[49] The kit was inspired by Hamilton's six regional municipalities and featured a gold patch signifying Forge's status as defending champions.

[52] The kits continued to be produced by Macron and sponsored by Tim Hortons for a second consecutive season.