Paul Warne has explained what really let Derby County down against Barnsley. Derby County were eager to make it six games unbeaten this weekend and could have left themselves within touching distance of top spot. However, a tough trip to promotion rivals Barnsley proved too much to handle, and a brace from Adam Phillips left them seven points adrift – while Bolton’s game in hand could drag them out of the automatic promotion spots. It was the Rams’ second consecutive match without the injured James Collins, who is expected to be sidelined for ‘significant weeks’. The striker has netted 18 goal…