With just three more wins needed to reach 300 total for his career, 43-year-old Gaylord Perry signed a one-year contract with the Seattle Mariners on March 5, 1982. Perry then earned his 300th win that May when he went the distance to beat New York at the Kingdome, 7-3.
Major League Baseball hasn’t always started seasons in March. In fact, the first time a Major League season did so was on March 31, 1996 in Seattle. The Mariners beat the White Sox 3-2 in twelve innings at the Kingdome.