Progression trumps regression for Chelsea on the Crystal Palace cruise
From Selhurst Park - Chelsea coach Thomas Tuchel will have been able to sleep peacefully in recent weeks, after finally dispelling Frank Lampard's longtime ghost.But while it is impossible to argue with an unbeaten 14-match unbeaten run, some skeptics will point to the overwhelming draw against Southampton and Leeds as important points were lost in the top four draw.That streak had become something of a false friend, with an unexpected European adventure, which means that Tuchel is forced to weigh his priorities every…