Continuing their supremacy at home, defending champions Kolkata Knight Riders rode on Piyush Chawla's match-winning four-wicket haul to beat Delhi Daredevils by 13 runs in a lop-sided IPL cricket match at the Eden Gardens.DD's pursuit of 172 was given a severe blow when the Chawla (4/32) claimed three wickets -- Kedar Jadhav, Yuvraj Singh and JP Duminy -- in two overs to reduce them to 111-5 in the 16th over as the visitors could never recover from the blow and were restricted to 158/6.This was DD's seventh loss of the season as they slipped to seventh position in the eighth team table with eight points from 11 matches and their hopes to qualify for the last four is all but over.With a second successive win at home, KKR (13 points), on the other hand, brightened their playoff hopes as they jumped past Royal Challengers Bangalore to occupy third place.KKR's batsman Yusuf Pathan plays a shot during the IPL match aganist Delhi Daredevils at Eden Garden in Kolkata.