League Two leaders Scunthorpe United have reached half time level at 0-0 with AFC Wimbledon.
The Iron, who are unbeaten in nine games, have now gone 347 minutes without conceding a goal.
Sam Winnall twice went close to breaking the deadlock for Scunthorpe in the opening 20 minutes, before the visitors improved and the game became an even contest.
Home goalkeeper Sam Slocombe has had to make good saves to keep out Sammy Moore and Alan Bennett.