Wigan head coach Shaun Wane admitted he had stern words with his players at half-time of the 21-16 Super League win over Hull KR at the DW Stadium.
The Warriors struggled to impose themselves in the opening period and were undone by the magic of Rovers playmaker Michael Dobson as the visitors surged into the lead.
But ultimately, tries from Josh Charnley (2), Darrell Goulding and Anthony Gelling proved enough to bag a narrow victory and keep the hosts top of the table - despite a late resurgence from Rovers.
Wane said of the half-time team talk: "I told the players what I thought. But they are honest, the players. They knew they didn't perform in that first half.
"We showed a lot of character. We weren't at our best, far from it, but to get two points against a really talented Hull KR team was a credit to the players. But the manner in which we won was a little bit disappointing for me.
"We were missing some important players but I still expect us to perform better than that, it is not acceptable at this club. The players are honest, they would say the same.
"Some of our errors today were very uncharacteristic but we will have a good week and I do expect improvement."
Rovers counterpart Craig Sandercock was less than impressed with the decision to award one of Charnley's tries, when the star winger appeared to touch the ball down on the sideline.
Sandercock said: "I can't comment otherwise I'll be copping a fine. What can I say about that try? Everyone saw it, you saw it, I saw it - and my eyes are pretty poor.
"Maybe one day the bounce of the ball will go our way."
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