ST ANDREWS, 18 Jul 2015 (AFP) - The 10 hour 28 minutes stoppage eventually forced organisers to announce that the final round would be held over until Monday for just the second time since it was first held in 1860.
Johnson was one of 39 players who played half an hour from 7:00 a.m. (1800GMT) in the morning before they were hauled off because their balls were being blown about by the gusting winds.
When he and the others were finally given the green light to get back into action at 6:00 p.m., the American parred 16 and 17 before sinking a four-footer at the last for a round of 69 and the outright lead at 10 under.
He will take a one shot advantage into Sunday's third round, with Englishman Danny Willett, who concluded his round over 24 hours earlier, solo in second.
"This morning when we started, it was almost impossible, but managed to hang in there, and then when we just went out and restarted, it was very tough, but managed to make some good pars and then birdie the last hole. So it was a good way to finish the day," he said.
Top Scot Paul Lawrie, the 1999 Open champion, gave the home fans who had waited patiently all day something to relish when he completed a second round of 70 to stand alone in third at eight under.
Tied on seven under at the start of the day were another Scot, Marc Warren, Australian Adam Scott and Americans Robert Streb and 2007 Masters champion Zach Johnson.
They were joined on that mark on Saturday evening by 2010 Open champion Louis Oosthuizen of South Africa, who had a 70, and Australian shotmaker Jason Day with a 71.
Dustin Johnson's playing partner Jordan Spieth, on a mission to become just the second man, after Ben Hogan in 1953, to win the British Open in the same year as the Masters and US Open, took a bogey at the tough 17th Road Hole, but birdied the last to stay at five under.
"It was definitely challenging on that 16th and 17th hole, but 18 with this wind the way it was and a little heavier wind, I was able to smooth a drive out there and hit it on the middle of the green," he said.
Tiger Woods, meanwhile, missed the cut in back-to-back majors for the first time in his career after a 75 left him well over the cut mark and near the bottom of the 156-strong field.
Also missing the cut were Bubba Watson and Ian Poulter.
The tournament, the year's third major, had already been badly hit by a rain-storm on Friday morning that caused a delay of over three hours and Saturday's additional long wait for the players meant that a Sunday finish became impossible to envisage.
"The intention is to complete the second round today with round three to be played on Sunday and the final round to be played on Monday," The R&A said in a statement.
The only other time there has been a Monday finish in 143 previous British Opens was in 1988 when Seve Ballesteros won the last of his three crowns at Royal Lytham.
It was a momentous decision by golf's ruling body, which has organised the Open Championship since 1860, but it became increasingly inevitable as the day wore on and the winds coming in off the North Sea refused to abate until well into the evening.
Collated second round scores and totals in the 144th Open Championship at St Andrews on Saturday:
(Gbr & Irl unless stated, par 72)
134 - Dustin Johnson (USA) 65 69
135 - Danny Willett 66 69
136 - Paul Lawrie 66 70
137 - Adam Scott (AUS) 70 67, Zach Johnson (USA) 66 71, Marc Warren 68 69, Louis Oosthuizen (RSA) 67 70, Jason Day (AUS) 66 71, Robert Streb (USA) 66 71
138 - Hideki Matsuyama (JPN) 72 66, Retief Goosen (RSA) 66 72, Paul Dunne (a) 69 69, Luke Donald 68 70
139 - Charl Schwartzel (RSA) 67 72, Justin Rose 71 68, Sergio Garcia (ESP) 70 69, Geoff Ogilvy (AUS) 71 68, Steven Bowditch (AUS) 70 69, Jordan Spieth (USA) 67 72, Anirban Lahiri (IND) 69 70
140 - Russell Henley (USA) 74 66, Jimmy Walker (USA) 72 68, Webb Simpson (USA) 70 70, Jordan Niebrugge (a) (USA) 67 73
141 - Matt Jones (AUS) 68 73, David Howell 68 73, Brooks Koepka (USA) 71 70, Ryan Fox (NZL) 72 69, Greg Chalmers (AUS) 70 71, Greg Owen 68 73, Branden Grace (RSA) 69 72, Stewart Cink (USA) 70 71, David Lingmerth (SWE) 69 72, Martin Kaymer (GER) 71 70, Romain Langasque (a) (FRA) 69 72, Anthony Wall 70 71, Paul Casey 70 71, Padraig Harrington 72 69
142 - Oliver Schniederjans (a) (USA) 70 72, Ryan Palmer (USA) 71 71, Gary Woodland (USA) 72 70, James Morrison 71 71, Phil Mickelson (USA) 70 72, Brett Rumford (AUS) 71 71, Kevin Na (USA) 67 75, David Lipsky (USA) 73 69, Eddie Pepperell 72 70, Cameron Tringale (USA) 71 71, Patrick Reed (USA) 72 70
143 - Francesco Molinari (ITA) 72 71, Richie Ramsay 72 71, Ashley Chesters (a) 71 72, Harris English (USA) 71 72, Thongchai Jaidee (THA) 72 71, Andy Sullivan 72 71, Marc Leishman (AUS) 70 73, Jamie Donaldson 72 71, Rickie Fowler (USA) 72 71, Marcus Fraser (AUS) 74 69, Henrik Stenson (SWE) 73 70
144 - Thomas Aiken (RSA) 75 69, Ross Fisher 71 73, David Duval (USA) 72 72, Graham Delaet (CAN) 71 73, Ben Martin (USA) 74 70, Mark O'Meara (USA) 72 72, Ernie Els (RSA) 71 73, Billy Horschel (USA) 73 71, Rafael Cabrera-Bello (ESP) 71 73, Bernd Wiesberger (AUT) 72 72, Lee Westwood 71 73, Bernhard Langer (GER) 74 70, Jason Dufner (USA) 73 71, Graeme McDowell 72 72, John Senden (AUS) 72 72, Scott Arnold (AUS) 71 73, Matt Kuchar (USA) 71 73, Hunter Mahan (USA) 72 72, Jim Furyk (USA) 73 71, Brendon Todd (USA) 71 73
Missed Cut
145 - Mikko Ilonen (FIN) 75 70, Marcel Siem (GER) 70 75, Brian Harman (USA) 73 72, Rikard Karlberg (SWE) 70 75, Pablo Larrazabal (ESP) 76 69, Victor Dubuisson (FRA) 74 71, John Daly (USA) 71 74, Tommy Fleetwood 69 76, Shane Lowry 73 72, Kevin Kisner (USA) 71 74, Carl Pettersson (SWE) 72 73, Alexander Levy (FRA) 70 75
146 - Byeong-Hun An (KOR) 74 72, Joost Luiten (NED) 74 72, Matteo Manassero (ITA) 73 73, Pelle Edberg (SWE) 72 74, Paul Kinnear (a) 70 76, Darren Clarke 73 73, Raphael Jacquelin (FRA) 76 70, Hiroyuki Fujita (JPN) 71 75, Jonas Blixt (SWE) 75 71, Tyrrell Hatton 70 76, Scott Hend (AUS) 74 72, Stephen Gallacher 73 73, Russell Knox 72 74, Brandt Snedeker (USA) 73 73
147 - Tadahiro Takayama (JPN) 75 72, David Hearn (CAN) 74 73, Bubba Watson (USA) 71 76, George Coetzee (RSA) 74 73, Danny Lee (NZL) 73 74, Keegan Bradley (USA) 75 72, J.B. Holmes (USA) 73 74, Ian Poulter 73 74, Sandy Lyle 71 76, Ryan Moore (USA) 74 73, Shinji Tomimura (JPN) 73 74
148 - Mark Young 74 74, Soren Kjeldsen (DEN) 75 73, Tom Lehman (USA) 75 73, Jaco Van Zyl (RSA) 79 69, Kiradech Aphibarnrat (THA) 73 75, Romain Wattel (FRA) 75 73, Miguel Angel Jimenez (ESP) 75 73, Yuta Ikeda (JPN) 74 74, James Hahn (USA) 75 73
149 - Koumei Oda (JPN) 73 76, Daniel Brooks 76 73, Ben Curtis (USA) 74 75, Hiroshi Iwata (JPN) 79 70, Daniel Berger (USA) 73 76, Adam Bland (AUS) 75 74, Bill Haas (USA) 75 74, Thomas Bjorn (DEN) 70 79, Morgan Hoffmann (USA) 73 76, Taichi Teshima (JPN) 76 73, Edoardo Molinari (ITA) 74 75
150 - Charley Hoffman (USA) 72 78, Robert Dinwiddie 73 77, Scott Strange (AUS) 77 73, Gunn Yang (a) (KOR) 73 77, Kevin Streelman (USA) 78 72, Liang Wen-Chong (CHN) 80 70, Justin Leonard (USA) 78 72, Tom Gillis (USA) 76 74, Alister Balcombe (a) 74 76 151
151 - Tiger Woods (USA) 76 75, Matt Every (USA) 73 78, Todd Hamilton (USA) 74 77
152 - Jonathan Moore (USA) 74 78, Rod Pampling (AUS) 77 75
154 - Nick Faldo 83 71
155 - Ben Taylor (a) 82 73, Mark Calcavecchia (USA) 80 75
156 - Tom Watson (USA) 76 80
157 - Gary Boyd 77 80