Bournemouth are two points clear at the top of the Championship after a 4-0 win at Oakwell.
Philip Billing put the Cherries in front and Dominic Solanke scored on the stroke of half time to give the south coast side an imposing lead at the break.
Diego Rico added a third for Jason Tindall's side with a fine free kick, and Sam Surridge added a fourth midway through the second half.
The defeat was Barnsley third in their last four games and leaves the Yorkshire side 14th in the table.
