The 1958 PGA Championship was the 40th PGA Championship, played July 17–20 at Llanerch Country Club in Havertown, Pennsylvania, a suburb west of Philadelphia. It was the first PGA Championship held in its current stroke play format, 72 holes over four days, ending on Sunday. The previous editions were at match play, with the two most recent ones at seven rounds over five days, the final two rounds at 36 holes per match. The announcement of the change was made eight months earlier in November. PGA Championship 1958: July 17–20, 1958 at Llanerch Country Club. Champion: Dow Finsterwald, at 276 (−4). Wiki link