Wigan centre Darrell Goulding replied to tie the scores .
Townsend 's kick into the in - goal for hooker Nathan Friend to dot down helped to put the Wigan up at the break .
Wigan centre Darrell Goulding replied to tie the scores , but Townsend 's kick into the in - goal for hooker Nathan Friend to dot down helped to put the Warriors up at the break .