The Open Championship is living up to its name after the kind of Saturday that provides the range of possibilities and emotions that make this sport what it is.

For halfway leader Shane Lowry, who at one stage threatened to go and do what he did at Portrush five years ago, a back-nine 40 left him seething. His complaints about the set-up of the course were not totally invalid, but more than anyone he ought to know what the deal is here. Perhaps the R&A could've put the tees forward on 15 and 17, but they didn't and that really is that.

Alongside him, Dan Brown was posing for selfies when coming down the 18th, where his double-bogey cost him a place in the final group. It's been a dream week for the Englishman but few will believe he can rebound from that blow and at 22/1, his odds barely shortened from one round to the next. The big change among these two is that Lowry, three back, is now alongside him in the betting.

Billy Horschel smiled his way to the front and would be a popular winner at a course where Americans have, for one reason or another, dominated. Horschel is three from five with the lead but two of those were a decade ago. He fits some trends, as a winner this year with a major top-10 finish to his name, and it's tempting to draw parallels with playing partner Justin Rose's US Open win when he talks about how he's gone to bed each night imagining himself with the Claret Jug. Rose had embraced the magnitude of moment, rather than seeking to downplay it.