Walt Zembriski, the former steelworker, was the leading casualty of the third round of the Ninth U.S. Senior Open. He led most of the day and was still ahead by a stroke before drowning two tee shots in the water on the treacherous par 3 17th hole en route to a quadruple-bogey 7. "I'll try to forget about it, but it's gonna be hard as hell," Zembriski said. "I won't forget number 17 at Medinah as long as I live probably."