US golfer Kevin Na and caddie Kenny Harns (L) line up a putt on the 2nd green during his final round on day four of the 2016 British Open Golf Championship at Royal Troon in Scotland on July 17, 2016. Troon has seen just about everything in terms of weather so far this week, with glorious sunshine on Thursday followed by wet and windy conditions on Friday and then more gusts on Saturday. Sunday is set to see a cloudy and damp start but the afternoon, when the leaders go out, is expected to remain dry and the wind is not forecast to blow any more strongly than on Saturday. / AFP PHOTO / ANDY BUCHANAN / RESTRICTED TO EDITORIAL USEANDY BUCHANAN/AFP/Getty Images

US golfer Matt Kuchar (R) watches US golfer Kevin Na putting on the 2nd green during his final round on day four of the 2016 British Open Golf Championship at Royal Troon in Scotland on July 17, 2016. Troon has seen just about everything in terms of weather so far this week, with glorious sunshine on Thursday followed by wet and windy conditions on Friday and then more gusts on Saturday. Sunday is set to see a cloudy and damp start but the afternoon, when the leaders go out, is expected to remain dry and the wind is not forecast to blow any more strongly than on Saturday. / AFP PHOTO / ANDY BUCHANAN / RESTRICTED TO EDITORIAL USEANDY BUCHANAN/AFP/Getty Images

South Africa's Haydn Porteous plays from a green-side bunker on the 8th hole during his final round on day four of the 2016 British Open Golf Championship at Royal Troon in Scotland on July 17, 2016. Troon has seen just about everything in terms of weather so far this week, with glorious sunshine on Thursday followed by wet and windy conditions on Friday and then more gusts on Saturday. Sunday is set to see a cloudy and damp start but the afternoon, when the leaders go out, is expected to remain dry and the wind is not forecast to blow any more strongly than on Saturday. / AFP PHOTO / ANDY BUCHANAN / RESTRICTED TO EDITORIAL USEANDY BUCHANAN/AFP/Getty Images

Argentina's Emiliano Grillo watches his drive from the 6th tee during his final round on day four of the 2016 British Open Golf Championship at Royal Troon in Scotland on July 17, 2016. Troon has seen just about everything in terms of weather so far this week, with glorious sunshine on Thursday followed by wet and windy conditions on Friday and then more gusts on Saturday. Sunday is set to see a cloudy and damp start but the afternoon, when the leaders go out, is expected to remain dry and the wind is not forecast to blow any more strongly than on Saturday. / AFP PHOTO / GLYN KIRK / RESTRICTED TO EDITORIAL USEGLYN KIRK/AFP/Getty Images

Northern Ireland's Rory McIlroy watches his drive from the 6th tee during his final round on day four of the 2016 British Open Golf Championship at Royal Troon in Scotland on July 17, 2016. Troon has seen just about everything in terms of weather so far this week, with glorious sunshine on Thursday followed by wet and windy conditions on Friday and then more gusts on Saturday. Sunday is set to see a cloudy and damp start but the afternoon, when the leaders go out, is expected to remain dry and the wind is not forecast to blow any more strongly than on Saturday. / AFP PHOTO / GLYN KIRK / RESTRICTED TO EDITORIAL USEGLYN KIRK/AFP/Getty Images

Northern Ireland's Rory McIlroy interacts with fans as he walks to the 6th tee during his final round on day four of the 2016 British Open Golf Championship at Royal Troon in Scotland on July 17, 2016. Troon has seen just about everything in terms of weather so far this week, with glorious sunshine on Thursday followed by wet and windy conditions on Friday and then more gusts on Saturday. Sunday is set to see a cloudy and damp start but the afternoon, when the leaders go out, is expected to remain dry and the wind is not forecast to blow any more strongly than on Saturday. / AFP PHOTO / GLYN KIRK / RESTRICTED TO EDITORIAL USEGLYN KIRK/AFP/Getty Images

Northern Ireland's Rory McIlroy reacts to missing a putt on the 4th green during his final round on day four of the 2016 British Open Golf Championship at Royal Troon in Scotland on July 17, 2016. Troon has seen just about everything in terms of weather so far this week, with glorious sunshine on Thursday followed by wet and windy conditions on Friday and then more gusts on Saturday. Sunday is set to see a cloudy and damp start but the afternoon, when the leaders go out, is expected to remain dry and the wind is not forecast to blow any more strongly than on Saturday. / AFP PHOTO / ANDY BUCHANAN / RESTRICTED TO EDITORIAL USEANDY BUCHANAN/AFP/Getty Images

Northern Ireland's Rory McIlroy plays from the rough on the 2nd hole during his final round on day four of the 2016 British Open Golf Championship at Royal Troon in Scotland on July 17, 2016. Troon has seen just about everything in terms of weather so far this week, with glorious sunshine on Thursday followed by wet and windy conditions on Friday and then more gusts on Saturday. Sunday is set to see a cloudy and damp start but the afternoon, when the leaders go out, is expected to remain dry and the wind is not forecast to blow any more strongly than on Saturday. / AFP PHOTO / ANDY BUCHANAN / RESTRICTED TO EDITORIAL USEANDY BUCHANAN/AFP/Getty Images