India's Jeev Milkha Singh has become the seventh player to pull out of The Open.
He had hoped the torn intercostal muscle he suffered at the European Open in May would not stop him playing, but after practising decided that it was better to rest.
Singh said: "When I went out yesterday to play 18 holes, it was hurting. When I was taking deep breaths, it was also hurting and when that happens, you know it's back. I'm only 60% fit and I don't want to play a major championship in that condition. My game is good but I just don't want to take any chances this week.
"I don't want to play in a tournament for the sake of playing in it but I want to be competing and be in contention. I want to be fit and I've always believed in that."
Australia's John Senden had flown from the US overnight as first reserve and had to wait only a few hours after his arrival to be told he was in.
The other six to withdraw so far are Phil Mickelson, Trevor Immelman, Robert Karlsson, Tim Wilkinson, Dudley Hart and Brett Quigley.