League Two leaders Lincoln came from behind to win 2-1 at Cambridge.
The Imps went behind to Jabo Ibehre's first-half strike, but responded courtesy of goals from Neal Eardley and John Akinde to go six points clear at the top.
Having scored on Boxing Day, Ibehre was again on target to put Cambridge ahead in the 28th minute. He sprinted clear before passing to Jevani Brown, whose cross from the left was perfect for Ibehre to nod home.
Eight minutes before half-time Brown was again instrumental, surging clear before finding Paul Lewis, who thumped a shot onto the bar from 18 yards.
The leaders were level 20 minutes from the end through Eardley, who scored his first goal of the season with a sublime free-kick into the top corner.
Five minutes later Akinde fired home on the turn to net the winner after Matt Rhead's flick.
Lincoln goalkeeper Grant Smith was still called on to preserve the points for Lincoln, saving brilliantly from Reggie Lambe five minutes from time.