For Sports Illustrated's April 1, 1985, issue, George Plimpton profiled Sidd Finch, a highly eccentric New York Mets prospect who could throw a fastball at an unheard-of 168 mph... and who was a product of Plimpton's imagination. On the 30th anniversary of the April Fools hoax, the surviving people responsible are profiled, including the Illinois middle-school teacher who posed as Finch for SI.