Delhi Capitals will lock horns with Chennai Super Kings in one of those do-or-die matchups after seven days that echoed their erratic campaign to date. Delhi have blown hot and cold more than the unpredictable capital weather: from whacking a record 264 in one match to crumpling for just 75 in the very next. Delhi Capitals had hit rock-bottom, having lost five of their six games but the chase of 226 against Rajasthan Royals was an impressive pad for DC to get back with a bang and stay alive in the playoffs race. Starc (return) and Ngidi (return) have strengthened…