The Honduran remained on the bench as the Latics were held 1-1 by Bournemouth of League One, just a couple of days after signing a two-and-a-half-year contract at the DW Stadium.
The 26-year-old, formerly of MLS side Sporting Kansas City, did not get the nod from Wigan manager Roberto Martinez but feels that further time with his new team-mates will be beneficial.
"I was ready to play but, at the same time, it might turn out to be a good thing that I didn't get on," said Espinoza.
"I'd not even managed to practice for a full day with the rest of the squad, so it wouldn't have been ideal.
"Obviously if the circumstances had been different, and we'd been two or three goals up, it might have been a different story.
"But it wasn't to be and it's meant I can spend this week further acclimatising myself into the club ahead of the Fulham game."