ST. LOUIS — A walk from the driving range to the 10th tee at Bellerive took longer than usual for Justin Thomas. One marshal wanted an autograph. Another wanted a selfie. He made it under the tunnel to find two more people stopping him for pictures. Thomas eventually made it up the stairs, onto the putting green and up a slight hill to the tee box with thousands of fans crammed on both sides and every seat in the grandstands occupied. That’s where some degree of normalcy returned.