Anxious wait over Wigan Athletic striker
The 22-year-old scored his second goal in the space of five days at Oxford on Sunday before limping off with a dead leg.
Without Lang, Latics were unable to repeat last Tuesday's win at Northampton, with the hosts scoring two late goals to take the spoils.
Advertisement
Hide AdAdvertisement
Hide AdAnd Richardson acknowledges Latics will be doing everything they can to have him available for the visit of the Tigers.
"We're trying to play to Callum's energy, and when we give him the chance he can certainly find the back of the net," the Latics boss said.
"That was the positive on Sunday night, I thought he was on form until he got injured, and his departure certainly affected our rhythm in the game.
"We're not sure on the extent of the injury, but it looks like a dead leg, when the goalkeeper caught him late when he was offside.
Advertisement
Hide AdAdvertisement
Hide Ad"It's that ruling where they carry on playing until the ball is dead, and he came off second best when the two players clashed.
"We'll obviously assess that and see how he is for Wednesday."
Wednesday's game was due to be played on Tuesday night, only to be rescheduled after the Oxford game was also pushed back 24 hours.
The trip to Oxford was then subject to two more delays to allow the pitch to thaw and then, bizarrely, because of a floodlight fire at half-time.
Advertisement
Hide AdAdvertisement
Hide AdRichardson, though, admits there's little he and his players can do but get on with the job of staying up.
"Listen, it doesn't help, does it, with the fixture list the way it is," he added.
"And then it's compounded with everything that's happened at the weekend that you just can't control.
"That said, we are where we are, and we've just got to get on with it."
Get 20% off our sports subscription package and stay up to date with all the latest Wigan Athletic news with a year’s subscription to WiganToday for less than 9p a day. Use promo code TRANSFER20