Espinoza flew to Wigan yesterday after securing a visa for the UK in New York earlier this week, and has now joined up with his new squad. The 26-year-old midfielder has inked a two-and-a-half year deal.
He makes the move to the DW Stadium after five years with the current US Open Cup champion, which also qualified for the 2013/14 CONCACAF Champions League.
"I am just so happy to finally be here," said Espinoza, who has scored three goals in 25 international appearances for Honduras. "It's taken a while to get all the paper work done but now I can concentrate on fighting for my place and helping the team."
Espinoza becomes the fourth Honduran international to play for the Latics blue as he follows in the footsteps of Wilson Palacios, Hendry Thomas and current squad member Maynor Figueroa.
Wigan manager Roberto Martinez was delighted to secure his second signing of the January window following the arrival of Chilean Angelo Henriquez on loan from Manchester United earlier in the week.
He said: "It is great to finally welcome Roger to Wigan and I know the supporters will give him a real Latics welcome. Usually players would have more time preparing for their debut and getting used to their new team-mates, but Roger is so desperate to play as soon as he can that we hope to see him on the pitch on Saturday. He is an excellent talent and every time we have seen him play he has shown the desire that as a club we like to see from our players."
Espinoza was on the Honduran roster this past summer as an overage player during the Olympic Games in London. He played in the historic 1-0 victory over Spain and scored in a narrow 3-2 quarterfinal loss to Brazil.
"The Olympics in the summer gave a great example of just what he can do on the pitch, especially in his performances against Spain and Brazil," Martinez continued. "He'll bring something new to the group and we hope to have many happy memories of him playing for Latics."