Wigan chalked up their first home win of the season with sparking display against a lacklustre West Ham side.
The Latics had failed to record a victory in four matches at the DW Stadium but served up a slick passing display that had Sam Allardyce’s men chasing shadows for 90 minutes.
It was a throughly horrible performance from the Hammers as they regularly surrendered possession to the hosts and failed to settle into any sort of rhythm in the North West.
It took Wigan only eight minutes to break the deadlock as they went against the grain by scoring from a set piece.
Jean Beausejour’s corner was flung towards Ivan Ramis and the Spanish centre half unleashed a magnificent first time volley from 14 yards that gave Jussi Jaaskelainen no chance.
Martinez’s troops quickly settled into their usual modus operandi with James McCarthy, Shaun Maloney and Beausejour all going close to doubling their advantage.
Andy Carroll cut a frustrated figure up front for most of the afternoon but should have done better when heading wide from James Tomkin’s cross.
But the Hammers shot themselves in the foot two minutes after the break as Jaaskelainen’s poor kick gifted Wigan possession and James McArthur took possession to find the net from the edge of the area.
Another chance fell to Carroll mid-way through the second period but his control let him down after being found by Matt Jarvis before Tomkin’s halved the deficit in the 90th minute, heading in George McCartney’s cross from the left.
But it was too little too late for West Ham as the home side held on to record their first Premier League win since August.