Tommy Smith and Murphy continued their fine scoring form with a goal in each half before David McGoldrick netted a deserved third in injury time. The win moves second-place Town a point behind the Cherries.
Derby County maintained their stranglehold over Leeds United with a comfortable 2-0 victory at the iPro Stadium that leaves the Yorkshire club just a point above the relegation zone.
A 30,000-plus crowd saw Derby move up to third in the league through a first-half own goal from Alex Mowatt and a Jake Buxton header early in the second half.
Winger Callum McManaman saw red nine minutes after coming on as Wigan were beaten 1-0 by Sheffield Wednesday to leave Malky Mackay’s men rooted in the bottom three at the turn of the year.
McManaman, who came under fire for a wild studs-up challenge on Newcastle’s Massadio Haidara in 2013, jumped at fellow substitute Claude Dielna with both feet in the 68th minute to earn his marching orders and Wednesday took full advantage.
Atdhe Nuhiu nodded beyond Wigan goalkeeper Scott Carson nine minutes after McManaman’s rush of blood to the head as the hosts suffered a third straight home loss, with Mackay having taken just one point from the 12 on offer at the DW Stadium since his controversial appointment last month.