Muirfield, Scotland: Smiling Jack Nicklaus, 26, of ohio, U.S.A., with the Trophy after winning the British Open Golf Championship at Muirfield yesterday, in Yesterday's final round, the 'Ohio Cannon' fought off the challengfe of fellow countryman Doug Sanders and Welshman Dave thomas to win the title by one stroke in a tremendous last green drama. It was Nicklaus first british open win. he had a four round aggregate of 282.