1) Padres reliever Josh Hader will survive the trade deadline but won't be back next season
Josh Hader is the big name on this list, and I believe he stays. If the Padres are smart, they should sell at least one of Blake Snell or Josh Hader to ensure a return on one of these two upcoming free agents. They've both had terrific years, but Snell as a starting pitcher will net more, and the Padres do have a good amount of pitching depth to survive without him if their offense ever proves to be capable enough to make a run.
Hader had a rough go of things last season after being acquired by the Padres at the deadline, but was great in the postseason and has been one of, if not the best closer in baseball this season.
The southpaw has a 0.95 ERA in 40 appearances and 38 innings pitched. He hasn't allowed a run in his last 17 appearances dating back to late May. He's converted 24 saves in 28 opportunities, and has been one of the few stars on this team to actually meet expectations.
With the amount of money the Padres are already investing into this roster, will they pony up the likely record-setting amount of money it'll take to keep their closer? Especially with Juan Soto's free agency looming? I find it highly unlikely.