Jerry Koosman Warm-Up Jacket: 1973
Jerry Koosman wore this warm-up jacket in 1973 as the Mets made another run for the postseason. He kicked off April with four straight wins, then won six of his final seven decisions at the end of the season. Koosman remained hot in October, recording wins in all three of his appearances in the NLCS and World Series.
From the collection of Andy Fogel (photo by Heritage Werks)