Wigan boss Roberto Martinez admitted he was disappointed to leave former club Swansea with only a point.
Home keeper Michel Vorm's second-half penalty save from Ben Watson secured a 0-0 draw for the Swans in their first Premier League game at the Liberty Stadium.
The away team were content to sit back and defend during a tense first half before opening up after the break and going on to twice rattle the Swansea woodwork.
Martinez, who returned to his old stomping ground for the first time since swapping the two clubs, said grabbing a winner would have sealed a perfect away performance.
He said: "I think we created enough chances to get the goal.
"When you hit the post, the crossbar, then get a penalty I think it showed the difference in the second half.
"I felt in the first half, where we wanted to calm things down and allow Swansea to have a little bit of possession, our concentration levels were very good.
"We weren't a threat but I felt we contained Swansea very well. Second half I thought we used the ball very well and in good positions.
"And to create the amount of chances we had in the second half it is disappointing not to get the three points."
Martinez refused to blame Watson for his penalty miss and also praised his players for remaining calm in the carnival atmosphere inside the Liberty.
He said: "It was a historic day for Swansea City and I'm really pleased that the players adapted to it really well.
"We were not affected by it and we finished the game really strongly.
"That's a real measurement of our great concentration and great professionalism."