ST. LOUIS – The Cardinals returned home from a three-city road trip with 15 games left on the schedule and roughly two and a half weeks to get last looks at players they hope will be major offensive contributors in the years to come. It wouldn’t hurt, of course, to show off some of that talent in front of large crowds on a celebratory weekend – assuming everyone stays healthy. Joshua Báez and Leo Bernal held up their ends of the bargain Friday night, powering the Cardinals to a 7-3 victory over the White Sox after an on-field celebration of the 2006 World Series champions and a 70-minute weather delay waiting for a storm that did not arrive. Dark clouds gathered nonetheless, as Jordan Walker exited the game in the top of the eighth inning after an awkward attempt to run out a double play ball that ended the bottom of the sixth. “\[The offense\