Spaniard wary of threat facing his club this Saturday, but believes, after an inarguable referring error cost his side points last week, that his side are long overdue on fortune
A controversial goal from Junior Hoilett and a last-gasp penalty amounted to Wigan's woes as their first home victory this season continues to elude their fans.
Martinez is wary of the threat the Black Cats pose his side, but he insists the Latics haven't received the rub of the green in recent weeks.
"Sunderland are playing at home and they will feel, with the money they have spent, that they should be beating a team like ours," Martinez told reporters.
"That is a level of expectation that you can understand, but we are hurt from the weekend and we feel we are owed points. We need to go out there and make sure we can get that."
The Spaniard believes that his team is playing at a decent level, particularly after last weekend's unfortunate draw, and he hopes deserved momentum arrives sooner than later.
"The team is playing at a good level, but we need to create that momentum, belief and confidence that comes with positive results," he continued.
"I just saw a turning point on Saturday and I feel we are capable of going anywhere and performing in a manner good enough to get three points."
Following the controversy surrounding Blackburn's second goal, in which Morten Gamst Pedersen took multiple touches of the ball when taking a corner, the Wigan boss was left outraged by the decision to award the goal.
"I spoke with Mike Riley and he faced the situation," Martinez said. "I think he was a real credit to the association and to the referees in general.
"Obviously, it is a very difficult action to explain, but I just want to move on. It is not something that you are going to see on a football pitch too often and I saw it as very careless at that moment.
"It is something you need to get right," he continued. "It is not down to judgement, it is probably one of the few aspects where refereeing in a game is black and white, with no grey areas.
"You have to deal with it with a little bit more care."