Wigan Athletic boss points to missed opportunities
Goals from Teddy Bishop 10 minutes into the game and Gwion Edwards 10 minutes from time gave the Tractor Boys all three points in the sunshine at Portman Road.
But it would have been so different had defender Emeka Obi - making his league debut - made better use of two gilt-edged free headers and Joe Garner not hit the bar inside the opening exchanges.
"I thought we started the game very well," acknowledged Sheridan, who was only appointed Latics boss on Friday night.
"We possibly should have been two up, we created some great opportunities.
"The first goal changes the outcome of games so often, and who knows what might have happened.
"And their first goal is very disappointing...it's a cheap foul, people switch off and it ends up in the back of the net.
"But while we were disappointed to go into half-time 1-0 down, in the second half we just never got going.
"I know it's the first day of the season, it's a boiling hot day and the pitch was sticky, but we didn't play with any penetration at all."
Given the strife at the DW Stadium this summer, it represented something of an achievement to get a side out on to the field.
Sheridan, though, is keen not to use the off-field carnage as too much of an excuse for on-field disappointment.
"Wigan have been a really good team for the last two or three years, and have played some really good football," he added.
"And to lose a huge chunk of what made all that success is difficult.
"But I don't want to keep bringing that up, or the administration.
"It's where we are, and hopefully I'll be able to bring in one or two things and help the situation."