Jared Young’s home-run heroics were not enough to save Carlos Mendoza’s job as New York Mets manager. Mendoza was fired Friday morning after 2 ½ seasons, replaced by interim manager Andy Green. The Mets (34-57) are last in the National League East, 15 games behind division-leading Atlanta and 9 ½ out of a wild-card playoff position. They lost their sixth-straight game 4-3 in 10 innings Thursday to the Chicago Cubs, who completed a four-game sweep at Citi Field in New York.