Diamondbacks general manager Mike Hazen’s remarks leading up to the MLB trade deadline proved prophetic in light of the deals he executed Wednesday.He had hinted that his organization would be part buyer, part seller, but it was unclear what such a strategy would entail. Arizona has hovered around .500 most of the season, and it occupied a strange place as it approached July 31 — not a clear wild card contender but also positioned to delay an extensive rebuild. That’s not to suggest Arizona anticipates success this August and September. Hazen, in fact, told the Arizona Republic on July 22 that he doesn’t expect his .500 squad to suddenly emerge as World Series challengers.“I don’t think, objectively, that’s a position we should be staking ourselves to,” Hazen said.He didn’t pin himself to that faint hope on Wednesday. Still, his flurry of attention-grabbing deadline moves — geared toward the present and the future — kept the Diamondbacks’ competitive season from becoming a thing of the past. Hazen did not view his in-between position negatively.“Like in (the) offseason, there may be some creative things we need to do to help us now and in the future,” Hazen told the Arizona Republic on July 10. “I think those possibilities exist.”MORE: How to watch “ChangeUp,” an MLB whiparound show, for free on DAZNThe Diamondbacks acquired two starters — a veteran and a rookie — without significantly eroding their minor league system. Then they offloaded right-hander Zack Greinke’s massive contract to the Astros and got several high-level prospects in return. As a result, they kept themselves in the 2019 playoff race while bolstering their farm.Arizona netted Mike Leake from the Mariners for prospect Jose Caballero, and it added promising rookie right-hander Zac Gallen from the Marlins for Double-A shortstop Jazz Chisholm. Leake (4.40 ERA) is a sturdy middle-rotation arm known for being able to handle a heavy workload. Arizona will reportedly pay just $6 million of the more than $20 million still owed to him. Gallen, meanwhile, is a 23-year-old with a 2.72 ERA in seven career outings. Each should contribute down the stretch this year.While Chisolm is a consensus top 100 prospect, he’s hitting .204 this year in Jackson. Caballero was not considered a crucial part of Arizona’s system.The Greinke deal may have appeared a contradiction from the Leake and Gallen deals, but in reality, sending their ace to Houston might work out for the Diamondbacks even in the short-term. In the final two months of the regular season, Leake and Gallen could theoretically combine to approach the on-field value of Greinke, who was making more than five times the salary of any of his Arizona teammates at $34.5 million. So far this campaign, Leake and Gallen have produced 3.1 wins above replacement compared with Greinke’s 4.7 bWAR. Gallen did not reach the big leagues until late June, though.MORE: Zack Greinke trade gradesShedding Greinke allows the Diamondbacks increased roster flexibility. They’re no longer on the hook for the full $70 million he’s owed across 2020 and 2021, instead eating $24 million of that total, according to a report from The Athletic’s Ken Rosenthal. They can reinvest the freed cash toward free agency or player extensions.Perhaps most important for the Arizona, though, is the prospect return it got for its ace. First baseman Seth Beer was Houston’s No. 3 prospect by MLB.com’s rankings. Right-handers J.B. Bukauskas and Corbin Martin ranked No. 4 and No. 5, respectively. Josh Rojas came in at No. 22.Each of those players is in Double-A or above right now, a crucial development for the Diamondbacks given their lack of upper-minors talent. They previously buffed up their Single-A ranks with a strong 2019 MLB Draft and had been searching for additional assets closer to MLB. They got those youngsters without conceding the current playoff race.