Here are three defenders Sheffield Wednesday could look to help combat their poor set piece problem. Danny Rohl hascriticised his team this week for their poor defending from set pieces, having conceded the fourth-most goals from corners and free-kicks in the Championship this term (13). Similarly, they have only actually scored six goals from set pieces themselves – the third lowest tally in the league behind Blackburn Rovers and Plymouth Argyle. Danny Rohl has admitted that the problem is costing them vital points in their race to avoid relegation. “This is for me a big, big part of the last…