The £6million summer signing from Estudiantes missed the chance to open his Premier League account when he saw a penalty saved by Robert Green moments after coming on during the second half of Wigan's 3-1 defeat at fellow strugglers West Ham. Much was expected of the former Boca Juniors forward, but so far his only goal has come in the Carling Cup against Swansea. Martinez, however, has no doubt the 25-year-old will soon be producing the kind of form which made him one of South America's hottest strikers. "I am very confident in the way that I want him to enjoy his football," the Wigan manager said. "He is settling in - it is very, very different to what he has been used to. "However, his goalscoring ratio in the Copa Libertadores and at the highest level in Argentina is magnificent - he scored 50 goals over two season and we're delighted to have him here." Martinez is happy with the centre-forward's progress to date. "As a striker you come into a new club and you want to score. He had a very good start in pre-season and then he scored in the Carling Cup. Slowly he's getting into better positions and has a better understanding," the Wigan manager added. "His movement is sensational and we need to make sure that we use that. "As a team sometimes it takes a bit of time for a player to settle in, there is also a new way of life, the family is settling in. "I am pretty confident that he will be himself playing for Wigan, and if we can achieve that he's going to be a huge asset for the future." Wigan were without suspended duo Hugo Rodallega and Antolin Alcaraz on Saturday, and failed to recover from going behind to Valon Behrami's 34th-minute strike. A seventh league defeat left Martinez's men still in the relegation zone, but now only two points ahead of both Wolves and West Ham. Martinez believes the battles at both ends of the table will go down to the wire - and feels this season of unpredictability has been down to "a question of belief". The Wigan manager continued: "Sometimes for whatever reason, when you believe that you can get a result against anyone, then you get it. "Probably the three clubs which got promoted this season, they instilled that - you see the way Blackpool have started, the way West Brom and Newcastle are playing. "Normally you only get maybe one out of the three teams who came up who stay around, but this time the three are having a huge impact and I think that is encouraging a lot of other teams. "Mentally with that belief you feel that you can get points form anyone - and that is infectious throughout the Premier League."
