The 15th hole continues to be the most difficult during the first round of the Zurich Classic. The 490-yard par 4 is playing .409 strokes over par midway through the afternoon wave.

"Today it was dead into the wind," said Joe Durant, the clubhouse leader after posting a 67. "I hit a really good drive there and still had 225 which was playing almost 250. It was into the teeth of the wind. I hit a really good 5 wood to the back left corner of the green, made my two putt and got out of there.

"I knew 4 there was going to be a good score."

David Toms certainly would have taken it.

"I couldn't even reach it today," he said. "And I said, does it count as not a green in regulation if you can't reach the green?  I mean, come on.

"But I hit two of my best shots and didn't get there, so that hole was brutal."

And that was hardly the only challenge. Durant said the par-3 14th was playing dead into the wind, too.

"I didn't have a club for that one," he said. "I tried to hit a 3-iron and missed the green short but was fortunate to get up and down. 

"Those were probably the two hardest holes back to back today."