I'm a Liverpool fan and i've always wanted to know this, I have no chelsea fans as mates and I frequently browse this forum cos I like to know what opposition fans are saying, even if it is a little flawed, so, what is Chelseas biggest and fiercest rivalry?
A few years ago when I didn't follow football too much I always thought it would naturally be Arsenal because I always grouped Liverpool/United together (North) Arsenal and Chelsea (London) but things have changed now, so what do you reckon? I didn't think Tottenham were successful enough to be Chelseas main rival.