The Scotsman said he tried a practice swing with a 5-iron in his room Thursday night and hit a glass chandelier which smashed into pieces over him.
Warren was taken to a hospital where he received stitches for a deep cut in his abdomen. He also had minor cuts on his arms and head.
'There was plenty of blood and a towel I held to my stomach was covered when I arrived at the hospital,' Warren said. 'But the only thing that hurt was the scratch on my head. I feel fine about playing today.'