The British Open at Royal Troon has seen challenging conditions, with strong winds and unpredictable weather impacting player performance significantly. Justin Thomas leads after the first round with a three-under-par 68, while Daniel Brown tops the leaderboard at six under par. Both Rory McIlroy and Bryson DeChambeau struggled, with McIlroy sitting at +7 and DeChambeau at +5, both needing strong second rounds to make the cut. The projected cutline is uncertain, with a high probability it will be around five-over par. Prominent players like Tiger Woods and Phil Mickelson are also at risk of missing the cut due to poor first-round performances. The second round will be crucial as players aim to navigate the tough conditions and secure their spots for the weekend.