PGA Championship

Robert Karlsson and Jeev Milkha Singh have been confirmed as first round co-leaders of the US PGA Championship.

Play had been suspended for 85 minutes on Thursday evening, leaving 18 players out on the course by the time darkness prevented further play.

Karlsson and Singh had posted early two-under-par rounds of 68 before the weather interruptions but Argentina's Andres Romero was out on the course at two under with two holes to play when play was called to a halt.

Romero returned on Friday morning but bogeyed the par-four 18th, the toughest hole on the course in the first round, to post a 69, one shot behind the leaders in a group of five also containing Spain's Sergio Garcia and the Americans Ken Duke, Billy Mayfair and Sean O'Hair.

The Argentine said he was happy to have got off to such a good start on a tough course featuring unforgiving rough, long par-threes and undulating greens.

"It's very tough but similar to the US Open at Torrey Pines with the rough," Romero said.

"You have to be straight. The last two tournaments I have missed the cut so hope to have a good week this week and I have started well.

"It's a very good round to be one shot behind the leaders and it's a very good start to the PGA Championship."

Asked if it was difficult returning to the course the next day to complete his opening round, Romero said: "The hard thing was getting up."

Eight players were starting their second rounds at level par, including world number two Phil Mickelson, the 2005 PGA champion, 2007 US Open champion Angel Cabrera and Anthony Kim, the young American with two PGA Tour wins to his name this year.

Cabrera recovered from a bogey at second hole of the day as he began his second round from the 10th tee to move to one under with an eagle three at the 12th, while one of his playing partners, Open champion Padraig Harrington, returned following last night's one-over-par 71 and opened with a birdie.

The Irishman then bogeyed the 11th and remained at one over after six holes.