Having edged out the Montreal Wanderers for the FAHL title, Ottawa retained the Stanley Cup and faced a challenge from the team in Rat Portage (later known as Kenora, Ontario). Ottawa had lost Frank McGee for the series opener, and the fleet-footed Thistles skated to victory. Tom Phillips put on a show for the fans with the first five-goal performance in a Stanley Cup game by a player other than the high-scoring McGee.
Ottawa's rink crew flooded the ice in the remaining two games, and the move greatly slowed the Thistles' fast-paced attack. McGee returned to score three goals in both games, including the Cup-winner in the finale.
1904-05 - Ottawa Silver Seven - Dave Finnie, Harvey Pulford (captain), Arthur Moore, Harry Westwick, Frank McGee, Alf Smith (playing coach), Billy Gilmour, Frank White, Horace Gaul, Hamby Shore, Bones Allen.
SCORES
| Mar. 7 | Rat Portage | 9 | at Silver Seven | 3 |
| Mar. 9 | Rat Portage | 2 | at Silver Seven | 4 |
| Mar. 11 | Rat Portage | 4 | at Silver Seven | 5 |