PITTSBURGH — According to reports, the Pirates are making changes to their coaching staff, parting ways with pitching coach Oscar Marin and third base coach Mike Rabelo. Assistant pitching coach Brent Strom will also not have his contract renewed. The Pirates have not confirmed the moves. Additional changes to the coaching staff could also be coming. Marin and Rabelo were two of the longest-tenured members of the coaching staff and were among former manager Derek Shelton’s first hires during the 2019 offseason. The report comes after manager Don Kelly signed a contract extension Monday. The Pirates finished the season 71-91 and in last place in the National League Central Division.