Castleford coach Daryl Powell knows his side will have to improve if they can secure a Super League spot.
The Tigers face a nervous wait to find out if they have made the top five.
They began with Hull before the fixtures that were final and, in case the Black and Whites beat St Helens on Friday as a result of this loss, their season will soon be over.
“We ended up tonight needing to keep it in our own hands but we were not great enough,” Powell told Sky Sports.
“It’s disappointing but we’ll see what happens – if Hull watch off St Helens then fair play to them.
“For us, well we’ll need to enhance a reasonable bit on this anyway – particularly the second half. Our attacking game was bad during the night, it was only dull but Wigan defended. We’re not good enough at the moment when groups are defending well against us”
Castleford’d Jesse Sene-Lefao to going in with all the knees on Oliver Partington delivered off.
Powell said:”We lost our subject a bit and I just said to them that we can’t do that – Jesse would never have meant to do this. I don’t believe there was any intent from him he does not head out to do anything and is a religious man that is pretty.
“I don’t believe there was lots of contact, I believed his knee struck the ground ”
Wigan trainer Adrian Lam paid tribute to the defence of his side as the Warriors secured second position.
As they create a home play-off tie against Warrington or Salford Oliver Gildart, Zak Hardaker, Joe Greenwood, george Williams and Morgan Smithies all crossed for tries.
“We weren’t perfect with the ball tonight but defensively I thought we had been unbelievably great,” said Lam.
“The defence happy me , that and using two senior players at Ben Flower and Sean O’Loughlin back. I’m really happy they got throughout the game.”
Lam confessed the clash with Castleford had been the preparation for the play-offs.
“I mentioned to them at the start of the week this is the sort of game which we desire and need,” the Warriors trainer said.
“I thought it would be down to two things, we prepped that it would be quite a two-point game and it actually was half-time.
“Our try-line defence continues to be outstanding. We had been and then we went the other end and scored. That’s brilliant so that I was very proud of these .”

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