The league phase kicks off this week, with several sides optimistic of unseating the European champions This competition is wide open. “But, wait, you say that every year!” No, honestly, this time it is wide open. The league phase of a new Women’s Champions League campaign begins on Tuesday with genuine elements of unpredictability, intrigue and a competitive feel after Barcelona, the holders, and winners of four titles in six years, underwent significant changes this summer. The Spanish champi…