It’s trade season, also known as A.J. Preller season, and the San Diego Padres figure to be again one of the more aggressive buyers ahead of the Aug. 3 deadline.A league-worst offense suggests restraint is the prudent course, but an apparently closing window of contention means that Preller, the longtime general manager, will spend the next month canvassing the league for potential reinforcements. Do the Padres have enough prospect capital and financial flexibility to pull off another blockbuster? Maybe not, but they’ll at least lurk in the background of some consequential discussions.Record: 43-39Record this time last season: 45-37Standing: second in NL WestPlayoff odds: 28.6 percent (FanGraphs), 41 percent (Baseball Reference)If the season ended today: eliminated from playoff contentionBiggest series between now and the deadline: The Padres will play four home games against the Arizona Diamondbacks, beginning July 6. Both NL West teams figure to spend the summer vying for a wild-card berth.Current needs: Starting pitching is a pressing concern for the Padres, who know they can’t bank on second-half returns from rehabbing veterans Nick Pivetta and Joe Musgrove. Another high-leverage arm would also be welcome in a frequently taxed bullpen. In a beleaguered lineup, the Padres could use an outfielder, a catcher and, regardless of position, left-handed hitting.