Because of the need for the play-off, no Stanley Cup challenges were made against western teams until the following winter. Ottawa had won Stanley Cup challenges that season, which meant that the 1906 season would have two Stanley Cup holders: Ottawa until March, and Montreal Wanderers for the balance of the year.
Stanley Chall.
Stanley Chall.
ECHA Champ.
z: best record, c: conference winner, y: division winner, w: wildcard, x: clinched playoff spot

Stanley Cup Challenge

Best of 3-game series
Queen's College of Kingston, the OHA champion, challenged the ECHA champion for the Stanley Cup
Date    OpponentResultScoreSeries
2/27vs Queen's UW  16-7 1-0
2/28vs Queen's UW  12-7 2-0

Stanley Cup Challenge

Best of 3-game series
Champions of the ECHA and FHL competed for the Stanley Cup
Date    OpponentResultScoreSeries
3/6vs Smiths FallsW  6-5 1-0
3/8vs Smiths FallsW  8-2 2-0

ECHA Championship

Most goals scored in 2-game series
Date    OpponentResultScoreSeries
3/14at Mtl. WanderersW  1-9 1-9
3/17vs Mtl. WanderersW  9-3 10-12