On April 22, 1962, the Pittsburgh Pirates defeated the New York Mets to bring their record to 10-0 to start the season. This hot start matched a Major League record at the time for an undefeated record to open the year. For the Mets, meanwhile, the loss meant they fell to 0-9, matching a National League record at the opposite end of the spectrum.
Forbes Field, Pittsburgh, Pennsylvania, c. 1909 (Library of Congress / public domain)