East Lothian, Scotland (Sports Network) - Losing in a playoff last week did not deter Zach Johnson. The former major champion opened the British Open with a 5-under 66 on Thursday to take a 1-stroke lead after the opening round.
The 2007 Masters champion has never led after any round at the British Open, and his 66 matched his second-best score at the year's third major.
Former Open champion Mark O'Meara carded a 4-under 67 and was joined in second place by Rafael Cabrera-Bello. O'Meara, the 1998 winner, posted his best score at the British Open since the first round in 2009.
A trio of Americans - Brandt Snedeker, Dustin Johnson and 1996 British Open champ Tom Lehman - started with 3-udner 68s. They were joined in fourth place by Miguel Angel Jimenez and Shiv Kapur, who started with six birdies in the first seven holes at Muirfield Golf Club. Kapur dropped three strokes on the back nine to fall down the leaderboard.
Three-time champion Tiger Woods and Scottish Open winner Phil Mickelson are tied for ninth at minus-2. Jordan Spieth, who won last week's John Deere Classic to get the last spot in the field this week, stands alongside Woods and Mickelson, as do Francesco Molinari, Angel Cabrera and 2004 Open champion Todd Hamilton.
Bubba Watson and Henrik Stenson are among six players tied for 15th at minus-1 as 20 players scored in red figures in the opening round.
Jason Day and major champions Padraig Harrington and Webb Simpson struggled to 2-over 73s on Thursday, while defending champion Ernie Els and Matt Kuchar stand at plus-3.
A large group of players faltered to 4-over 75s and share 77th place. Among that group were Fred Couples, Sergio Garcia, Geoff Ogilvy, Tom Watson, U.S. Open champion Justin Rose, Graeme McDowell, Nick Watney and Keegan Bradley.
Zach Johnson, who lost to Spieth in a playoff last week, did most of his scoring in a five-hole burst on the front nine.
The 37-year-old birdied the third to get into red numbers. He poured in an eagle effort at the par-5 fifth to jump to 3-under.
Johnson followed with back-to-back birdies at six and seven to gain a share of the lead at minus-5. He ran off four pars in a row from the eighth before being the first to 6-under with a birdie on the 12th.
At the 14th, Johnson stumbled to a bogey to cut his lead to one. He wrapped up his round with four consecutive pars to hold the lead.
"Very pleased. It was a very solid day. I felt great," Johnson stated. "I had some good numbers to hit some shots close, because that is part of it here, as firm as it is. Anytime you shoot under par in an Open or a major, for that matter, you have to be putting at least somewhat decent, and I putted great.
"I made some nice birdie putts and obviously that one for eagle. But I struck some really nice solid par putts. That's what you've got to do to stay in it. All in at all, very solid, just it's just one round."
Jimenez was in control early as he started with birdies on each of the first three holes, with another birdie at the fifth. After a trio of pars, he birdied the ninth to make the turn with the lead at minus-5.
However, Jimenez dropped shots at 12 and 16 to fall two shots off the pace.
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