The Pittsburgh Pirates acquired left-hander Antonio Bastardo and cash considerations from the New York Mets for left-hander Jonathon Niese.
Bastardo, 30, has 46 strikeouts and a 4.74 ERA in 41 relief appearances this season. Last season for the Pirates, Bastardo was 4-1 with a 2.98 ERA in 66 appearances.
He signed a two-year, $12 million deal in the offseason with the Mets.
Niese is 8-6 with a 4.91 ERA this season. He was acquired by the Pirates from the Mets in the offseason for second baseman Neil Walker.
Pirates acquire LHP Antonio Bastardo from Mets for LHP Jonathon Niese