ORLANDO, Fla. – The Tavistock Cup, which since 2004 has been an interclub match between Isleworth’s and Lake Nona’s golf professional members, will have a different look this week.

For the first time, four clubs will compete for the Tavistock Cup, with 24 players involved in the competition. The first round of the two-day tournament at Isleworth Golf & Country Club begins in less than an hour (10:50 a.m. ET).

Monday’s format will consist of six matches of four-ball ( see schedule below). Tuesday’s competition will be singles matches.

Isleworth and Lake Nona will be two of the clubs in the competition, along with Albany and Queenwood. Albany is a new luxury resort community in The Bahamas and Queenwood is an exclusive private members’ club in the Surrey countryside near London.

Tiger Woods, fresh off his final-round 66 that bumped him up to 10th place at the World Golf Championships-Cadillac Championship on Sunday, will compete for Team Albany. Reigning U.S. Open champion Graeme McDowell leads Team Lake Nona ( team rosters below).

Tavistock Cup contestants play for prize money, team hole-in-one prizes and the title of World Golf And Country Club Champion.

The two-tournament will be broadcast live on the Golf Channel starting at Noon ET.

TAVISTOCK TEAMS

MONDAY’S FOUR-BALL MATCHES

The first page of the leaderboard looks like a United Nations convention. There are nine different countries represented among the top 11 players.

Six of those are part of the European Union which bodes well for anyone who wants to end that nagging little jinx. The last time a European won the U.S. Open was 40 years ago at Hazeltine National when England’s Tony Jacklin beat Dave Hill by seven shots.

Northern Ireland's Graeme McDowell owns the lead at 4 under, one stroke ahead of American Dustin Johnson, who has won the last two PGA TOUR events played at Pebble Beach. Johnson just eagled the fourth hole to narrow the gap.

Ryo Ishikawa, the 18-year-old phenom from Japan; Gregory Havret of France, South Africa's Ernie Els and America's Phil Mickelson, the world's No. 2 player, are tied for fourth at event par.

The group at 1 over includes Martin Kaymer and Alex Cejka of Germany, England's Ian Poulter, K.J. Choi of South Korea and Soren Kjeldsen of Denmark.  -- Helen Ross

Robert Karlsson’s posted his best finish of the season – and a career-best on the PGA TOUR – when he lost to Lee Westwood in a playoff at the St. Jude Classic presented by Smith & Nephew on Sunday.

The Swede continues to build on that momentum at the U.S. Open, too.

He just birdied the sixth and seventh holes to move to 2 under, although he gave a shot back on the next hole. So Karlsson is one stroke off the lead held jointly by Edoardo Molinari, Soren Kjeldsen and David Toms.

Contending at the U.S. Open is no surprise for Karlsson, though. He tied for  fourth in the major in his last appearance in 2008 before he was sidelined with serious eye problems that only recently have been regulated. – Helen Ross

Luke Donald isn't the longest player on the PGA TOUR -- by any means. But Pebble Beach isn't one of the longer U.S. Open venues, either.

And the way the steady Englishman has been playing of late, many observers expected him to contend at the U.S. Open. Donald isn't disappointing, either.

He started on the back nine and reeled off nine straight pars. A birdie on the first hole has just put Donald in red numbers, only one stroke off the lead held by Soren Kjeldsen and Edoardo Molinari.

Donald ended a four-year victory drought with a win at the Madrid Masters last month. He tied for second in the European Tour's flagship event, the BMW PGA Championship, the week before his win and finished third in Wales the week after. – Helen Ross

Soren Kjeldsen, who just made the turn at 3 under and leads the 110th U.S. Open, isn't exactly a household name here in the States. So here are three things you should know about the 35-year-old Dane.

1) While you may be surprised to see him at the top of the leaderboard, his career-high finish on the PGA TOUR came in the 2009 PGA where he tied for sixth.

2) He's a three-time winner on the European Tour with victories in each of the last two seasons.

3) He ran a marathon in 1997 in a solid three hours, 54 minutes. He hasn't run one since, saying "Once was enough for me. I try to stay in good shape but not as extreme as that."

Kjeldsen is playing in his second U.S. Open. He has never broken par and is a combined 26 over in six rounds in the difficult and draining major. -- Helen Ross