Rochdale battled to a goalless draw at Colchester to continue their revival under boss John Coleman.
Colchester enjoyed the best of the first half as Freddie Sears and Ian Henderson came close and Steven Gillespie forced a Peter Kurucz save.
Ben Williams pulled off a brilliant close-range save from Dale's Michael Symes shortly after the break.
Sears came close again, firing over from a tight angle before Symes sliced wide in the closing stages.
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Colchester United manager John Ward told BBC Essex:
"We couldn't find the opening, but we stopped them getting the opening as well. We're going to get some disappointments like this.
"We've worked hard, and had a disciplined performance from the team, but won the ball back enough times to have done better with it.
"We played tight but couldn't find that final bit of quality in the top 30 yards of the pitch.
"That's the frustrating bit, that's the best part of out team really, over the season, that's the one consistency we have had where we've created chances and we've had opportunities. Today we've found that hard to come by."
Rochdale manager John Coleman told BBC Radio Manchester:
"Neither goalkeeper was overly worked possibly due to the fact how both teams set up they really cancelled each other out.
"We're going to have to take more impetus and possibly take a few more chances going forward.
"But the first thing that needed addressing when we came here was the number of goals conceded and we've done that.
"We've got a philosophy of how the game should be played and we're trying to bring that to Rochdale and the lads are getting closer."