PITTSBURGH—Grant Jackson, the winning pitcher in Game 7 of the 1979 World Series for the “We Are Family” Pittsburgh Pirates and a reliable left-hander for 18 seasons in the majors, died Tuesday from COVID-19 complications. He was 78. The Pirates said Jackson died at Canonsburg Hospital in Pennsylvania. “This pandemic has affected every family throughout our community, and the Pirates family is no different,” team President Travis Williams said. Williams said Jackson “remained dedicated to the Pirates and the city of Pittsburgh” and was “an active board member of our alumni association who was always willing to help make an impact in our community.” Known for bringing the ball far behind his back and then slinging it toward the plate, Jackson was 86–75 with 79 saves and a 3.46 ERA in 692 games from 1965–82. He was 3–0 with a 2.55 ERA in 13 postseason appearances. Jackson was an NL …