Millwall were left disappointed not to take all three points after a goalless draw with Barnsley at the New Den.
The Lions's Josh McQuoid missed the best chance of the first-half when he shot wide at point-blank range.
The home side continued to press in the second-half but could not make the breakthrough thanks to some solid goalkeeping from Luke Steele.
Millwall travel to Birmingham after the international break on Sunday, September 11, while Barnsley take on Leicester City the day before.