Promotion-chasing Bournemouth put back-to-back Championship defeats behind them as Philip Billing's goal gave them victory at bottom club Barnsley.
Billing headed home Dominic Solanke's cross after goalkeeper Brad Collins had been caught out of position and should have doubled the lead before half-time when he shot over from close range following good work on the left by Ryan Christie.
Barnsley, whose head coach Poya Asbaghi was again absent because of illness, threatened either side of the break as Mark Travers saved well from Callum Styles and Devante Cole.
The Tykes had only scored eight goals in 12 previous home league games and drew a blank in front of their own fans for the seventh time in the league this season despite a determined second-half effort as Bournemouth held on for the three points despite the late dismissal of Gary Cahill for a poor challenge on Cole.