New quarantine rules put Irish Open 'in trouble', says Shane Lowry And the reigning British Open champion is forced to look for a new caddie to help his title defence preparations. By The42 Team Monday 12 Apr 2021, 8:09 AM Mon 8:09 AM 27,400 Views 19 Comments Shane Lowry with caddie Brian 'Bo' Martin on the first fairway during the second round of The Masters. Image: SIPA USA/PA Images Shane Lowry with caddie Brian 'Bo' Martin on the first fairway during the second round of The Masters. Image: SIPA USA/PA Images SHANE LOWRY THINKS that July’s Irish Open at Mount Juliet ‘is going to be in trouble’ because of the government’s latest quarantine rules.