Rams coach Neil Kelly says his team need to be at their best defensively when they visit Batley Bulldogs on Sunday afternoon (3pm).
The Rams boss has said that he will be surprised if his side don’t face a tough test when they travel to their closest rivals at the weekend.
Sunday’s game will be the fifth meeting between the clubs this season – Dewsbury have won three of the four encounters so far – but Kelly believes Batley will pose a threat across all areas of the pitch.
“We are expecting a tough test, we will be disappointed if we don’t get one,” said Kelly.
“We need to defend better at Batley, on Monday we scored 28 points and still didn’t win, so we know that we need to improve our defence but we need to be smarter all round.
“Matt Diskin has done superbly well at Batley, he seems to be stamping his authority on the team and I am hearing that they have been putting in some good performances.
“They have turned their performances and results around and they have a lethal combination in (Patch) Walker and (Dom) Brambani.
“They offer a threat right across the park.”
The Rams lost their first game in the Shield at home to Swinton on Bank Holiday Monday.
Kelly says that his team must learn from the mistakes made during that game as they aim to rebuild momentum ahead of the semi-finals.
He said: “Swinton adopted certain tactics that disrupted our flow and unfortunately we fell for it and got involved in playing a style of game that benefited Swinton.
“We know other teams will come and play us and adopt the same tactics and we need to work out how to get around that.”
Dewsbury have also convinced Josh Guzdek to sign a one-year extension, despite interest from some full-time clubs.
Kelly is pleased to have the young full-back on board for next season, but he has said that Guzdek is likely to be out for the rest of the year after suffering an injury against Swinton.
“Josh is a very good player, that is why we were determined to keep him - he is the kind of player that can take the club forward and I am pleased that he has signed,” said Kelly.
“However Josh is going to have an operation on his hand and is likely to miss the rest of the season, there is an outside chance he could be back but we won’t risk him.”
Aaron Brown has also signed a new deal to stay at the club while Jordan Crowther is due to join on a 12-month loan from Wakefield for the 2018 season.