The City boss also believes the side have got their confidence back after the draw against Shrewsbury at Sixfields...
Coventry City manager Steven Pressley has revealed the switch to zonal marking helped the Sky Blues keep a clean sheet against Shrewsbury Town.
The Sky Blues have operated man-to-man marking for set-pieces for the vast majority of the 2013/14 League One season.
However, City conceded eight goals in three games against Notts County, Tranmere Rovers and Carlisle United, so Pressley has revealed he looked to rectify the defensive problem.
The City boss said: “We haven’t been scoring as many goals as we did in the first few months of the season but we've still been conceding goals which becomes a problem.
“All the top teams in the country do zonal marking so we've worked hard in training to bring that in and it definitely worked at the weekend as we kept a clean sheet.
“If we do concede goals, it isn’t always down to the system we play. Sometimes, the players have to take responsibility for their jobs.
“When you play during tough periods like this, you learn a lot about your players and this will go a long way to helping develop our players.”
Pressley’s side are looking to build on their point against the Shrews as Walsall visit Sixfields tomorrow night.
City have seven games remaining during March and Pressley believes his side have got their confidence back ahead of a crucial period.
He added: “It is a difficult period throughout March as we've got a lot of games so it was important to make sure we recovered from our recent defeats.
“When you go through a difficult period like we have, we had to go back to basics to ensure we got a result from the game.
“The clean sheet is definitely a foundation to build on. We had nearly twice as many passes as the opposition did at the weekend.
“We just need to improve on certain aspects of our forward play. I would like to see us improve our striker combination and I think we’ll be getting back to our best.”