Sheffield United maintained their grip on second spot in the Sky Bet Championship after a 1-0 win at Reading.lliman Ndiaye's second-half strike earned the Blades a crucial victory in the race for promotion.Victory leaves the Blades 10 points behind runaway leaders Burnley and seven above third-placed Middlesbrough.Reading were dangerous, with Andy Carroll a nuisance, and Tom Ince came the closest for the Royals in the first half.But Ndiaye linked well with Oli McBurnie on the hour to score against the run of play and seal the points for the visitors.Daryl Dike maintained West Brom's promotion hopes as they beat struggling Wigan 1-0.The striker scored his sixth goal of the season when he nodded in after Jayson Molumby's shot had been turned onto the crossbar by Ben Amos.Wigan goalkeeper Amos also turned a Dike shot onto a post and Jed Wallace and John Swift hit the woodwork for the hosts.Victory left the Baggies ninth in the Championship and four points adrift of the top six.Huddersfield climbed off the bottom and above the Latics on goal difference after a 0-0 draw with Bristol City.Robins boss Nigel Pearson marked his 600th game in management but could not find a victory to celebrate the milestone with.The Terriers remain in the bottom three and are six points from safety, with City 13th in the table.