Muirfield:The third round of the British Open Championship is underway amid damp conditions at Muirfield, Scotland. World Number One Tiger Woods' challenge though seems somewhat shaky after a dropped shot at the first in today's third round. Woods' game fell apart in the rain and wind, putting into jeopardy his chances of winning golf's Grand Slam. Woods dropped four shots to par over the first five holes and was even par for the tournament, seven shots off the lead. Meanwhile, Padraig Harrington began his third round in excellent form, surging into the lead. But a double bogey at the fourth dropped him back to five under and a tie with Ernie Els at the top of the leaderboard while Soren Hansen, Shigeki Maruyama and Carl Pettersson are tied at four under.