The Padres waded through reconstruction in 2017, auditioning and, in some cases, committing to youth. In August, they acted on a long-discussed idea by extending manager Andy Green. Having had concurrent talks with their general manager, the team’s owners shifted their attention to A.J. Preller, who, like Green, had recently turned 40. “I jokingly said to him we need to get this done more quickly than the last one, because I think the last one took seven months to get done,” Executive Chairman Ron Fowler recalled. By October, an agreement was struck. Preller, like Green, has received a guarantee of three more years. His extension, which will be announced Sunday morning, keeps him under contract through the 2022 season. Preller’s original, five-year deal would have taken him through 2019. As with Green, locked up through 2021, the Padres granted rare job security in a year of noticeable staffing turnover for other clubs, most of which have been winning more games. Fowler and Managing Partner Peter Seidler, meanwhile, believe this is the duo to turn a persistent playoff drought into consecutive October appearances.