Wrexham have won just three of their 13 Championship matches so far this season [Getty Images]Phil Parkinson says Wrexham need to conduct some "honest" self-assessments on the back of their lacklustre display against Sheffield United.The Red Dragons were significantly below par at Bramall Lane, particularly in the first half, as Ben Brereton Diaz's 30th-minute strike earned the Blades a 1-0 victory.After the defeat in South Yorkshire, Parkinson urged his players to be individually "self-analytic