Rory McIlroy faced challenges at the Open Championship, with Shane Lowry and Daniel Brown making notable performances. McIlroy struggled in the tournament, expressing disappointment in his performance compared to Justin Thomas and others. Despite past major disappointments, including a recent US Open loss to Bryson DeChambeau, McIlroy remains determined to succeed. Observers, like Wayne Riley, believe McIlroy has the resilience to overcome setbacks and perform well, emphasizing his strong golfing skills and potential for success at the Open Championship.