 Westwood One Sports presents this special report on the 152nd British Open Championship, sponsored by the United States Postal Service. Simple, affordable, and reliable shipping with USPS ground advantage. Things are happening at Troon. Billy Horschel birdied his opening hole. He's 5-under. Justin Rose birdied the second hole to go to 4-under. Scotty Scheffler birdied the third hole.