NEWTOWN SQUARE, Pa. — Walking inside the front door at the 50,000-square-foot PGA merchandise pavilion, you first see a DJ—not Dustin Johnson, but a guy who is mixing music. He’s useful here, drowning out the sounds of serious shopping. Here's the PGA Shops DJ ... now go buy a shirt. | John Schwarb/Sports Illustrated When a major comes to your town for the first time in 13 years (Merion, U.S. Open, 2013) and the PGA Championship is back for the first time in 64 years (1962), that begs for a shirt, hat or a tchotchkes. Or all the things. The sprawling pavilion—officially called “The PGA Shops,” which sounds less intimidating—brings virtually every major brand in golf under one roof to move product adorned with the 2026 Aronimink PGA logo and any number of odes to golf, Philadelphia, freedom, the Eagles, the Phillies and the highways fans drove to get here.…