Derby County suffered a 1-0 loss at the hands of Northampton Town this afternoon, but an even bigger blow was watching Nathaniel Mendez-Laing go off the field. Derby County were beginning to build up a head of steam in the race for promotion. Four wins on the bounce, including a vital 1-0 victory over Bolton Wanderers last weekend, saw the Rams pull four clear of third. Sadly, Derby couldn’t follow that up with a fifth win this afternoon as a first-half strike from Sam Hoskins secured three points for the hosts. Paul Warne‘s men lost the battle in midfield as Ebou Adams looked fatigued and Con…