David Moyes believes Tim Cahill is back to his best following a second headed goal in the space of a few days.
The Everton midfielder has shown a knack for scoring crucial goals in previous seasons and has been particularly deadly in the air.
He had gone through a quiet spell at the start of the season but has improved in recent weeks and found the target against Sunderland on Wednesday.
Cahill then sealed a 1-0 victory over Wigan on Saturday and Moyes has been delighted with his recent form.
"It's what he does - trademark Tim Cahill," Moyes said of his late header at the DW Stadium.
"I think he feels good about it because he knows he's capable of that and he's probably not shown it quite as much this year.
"But I think he's looking fitter and I think he has played better in the last six weeks or so.
"I think he is beginning to feel much more like himself."