Building on an idea first used by Buffalo, N.Y.’s minor-league team, the Delmarva Shorebirds will transform Perdue Stadium in Salisbury, Md. into a par-3 course for three days as a promotional event that it hopes will appeal to the strong local golf community. Only 7-, 8- and 9-irons and wedges will be allowed, and all shots will be taken from the concourse at targets set up throughout the field. Golfers will be charged $50 to play, with registration required.