The result leaves the Latics without a win in their last four games with second placed Nottingham Forest to visit the DW Stadium on Tuesday evening.
“Overall, I feel personally embarrassed to the chairman and to the supporters that we as a group can’t deliver better results at this time,” Rosler told the club's official website.
“We’re lacking confidence; we’re lacking Championship qualities in certain units of the pitch, in power, strength and confidence to move the ball quickly.
“I’m disappointed that we couldn’t break them down and that we didn’t have the power or the belief to score goals.”
With the large number of changes over the summer it is taking longer than expected for the team to settle into a consistent rountine.
The visit of Nottingham Forest on Tuesday won't help matters.