Rio Olympics silver medallist PV Sindhu produced a disciplined performance to outwit Saina Nehwal in straight games in a much-anticipated encounter as Chennai Smashers entered the finals of the Premier Badminton League season 2 with a 4-1 win over Awadhe Warriors in New Delhi last night.China Open champion Sindhu, who has never defeated London Olympics bronze winner Saina in a tournament, finally exorcised the ghosts of her losses with a 11-7 11-8 victory over her senior colleague in a crucial women's singles clash which was Chennai's trump match.