In an effort to freeze out the Montreal Wanderers, the ECHA disbanded in December 1909 and a new league called the Canadian Hockey Association (CHA) was formed, deliberately designed to exclude the Wanderers, who then joined the newly formed National Hockey Association (NHA). The CHA survived only a few weeks of play in January 1910 before two teams jumped to the new National Hockey Association (NHA).
Stanley Chall.
Stanley Chall.
Stanley Chall.

Post-Season Stanley Cup Challenge

The Wanderers having won the O'Brien trophy won regular season championship of the NHA and took possession of the Cup from Ottawa. They had a challenge from Berlin, champions of the Ontario Professional Hockey League and easily defeated them. For 1910, there would be two Stanley Cup holders, Ottawa until March, and Montreal for the rest of the year.
Date    OpponentResultScoreSeries
3/12vs BerlinW  7-3 1-0