Kyle Dempsey was sent off as the 10 men of Bolton Wanderers ended up holding on for a point in a goalless draw on the road to Cambridge United.
In a first half which did not sparkle, Wanderers came closest to taking the lead firstly through Jack Iredale's deflected effort which Amadou Bakayoko almost got on the end of. Then Elias Kachunga volleyed over from the edge of the box as the deadlock remained at the break.
Early in the second half, James Trafford produced a marvellous save to deny Harvey Knibbs the opener. Wanderers broke forward not long after and Dion Charles eventually blasted over.
