Bournemouth maintained their spot at the top of the Championship with a routine win at struggling Wigan.
James McClean hit the crossbar for the hosts early on but Callum Wilson burst clear of the Latics defence to slot the Cherries ahead.
Yann Kermorgant doubled the advantage four minutes later with a powerful strike from the edge of the area.
Wilson added a third with a smart finish after the break, before Leon Clarke headed a consolation for Wigan.
The Latics, who have now won only once in 15 league matches, remain second from bottom in the table, seven points adrift of Brighton.
With Derby romping to victory against Bolton at the iPro Stadium, Eddie Howe’s side needed to win to stay top – and once Wilson had fired them ahead in the first half that always looked the most likely outcome.
It was the home side that had the better of the opening 15 minutes, with McClean’s free-kick from a tight angle clipping the bar and new signing Kim Bo-kyung sending an overhead-kick off target.
But Wilson’s confident finish when one-on-one with Al Habsi set Bournemouth on their way to a 17th win in 29 Championship matches, and Kermorgant’s powerful strike after dispossessing Chris McCann made it 2-0 before half-time.
The Cherries continued to press after the interval and, having blazed a great chance wide moments before, Wilson showed great composure to score his second and put the visitors in complete control.
Leon Clarke, making his debut after signing on loan from Wolves on January transfer deadline day, then nodded McClean’s cross home from four yards out to give Wigan hope with 30 minutes remaining.
But, once Bournemouth goalkeeper Artur Boruc had turned Liam Ridgewell’s header over the bar, the visitors were able to see the game out.