Clothing giant Delta Apparel Inc has posted a 17.5 per cent year-on-year jump in third quarter sales to a record $32.9 million and said it was confident that trend would continue into the fourth quarter. In a statement, the Georgia-based employer of 2,700 people worldwide said net earnings for the quarter were $1.9m, or 5.7 per cent of sales, down $0.3m from the prior year quarter.