The 152nd British Open at Royal Troon has been fiercely contested under brutal weather conditions. Billy Horschel leads at 4-under after a remarkable 69 in rain and wind, defying his previous poor Open record. Major rookie Daniel Brown sits just one shot behind Horschel despite a costly double bogey on the 18th hole. Shane Lowry, who led initially, fell to ninth place after a difficult third round, shooting a 77. The tournament remains wide open with several players, including Scottie Scheffler and Xander Schauffele, within striking distance of the lead.