Wigan Athletic boss Roberto Martinez is convinced of Premier League survival after their derby win over Bolton Wanderers.
Martinez said: "We need as many players like James from now until the end of the season. There are many things we can control but you need the belief, arrogance and bravery in your make-up.
"It's easy to play when you're in the top six but in our position you need an extra bit of mettle. We know what it takes and we will fight with our lives to carry on in this league."