Derby County had a largely successful summer transfer window but struggled to strengthen in one key position. In a bid to avoid a relegation battle following their promotion from League One, Paul Warne made a staggering 12 additions during the most recent window. Several of those players have already shone for the Rams in the current campaign, with goalkeeper Jacob Widell Zetterstrom named in the Championship Team of the Week, following his display in the win over Cardiff City on Saturday. Derby County have now managed to keep three clean sheets on the spin while playing at Pride Park in the l…