By Matt Hardy Today at Edgbaston in Birmingham four teams will battle it out to be crowned T20 Vitality Blast champions on Finals Day. The traditional Finals Day has been held in Birmingham uninterrupted every year since 2013 and it’s a day where fans get three matches for their ticket cost. So who is in Finals Day and which team is the favourite? T20 Vitality Blast teamsAstonishingly the four winners of the quarter-finals all came from South Group, meaning there will be no northern representatives in Birmingham. It continues a strong showing for the south, with 14 of the last 16 representativ…