The Mariners, along with every other Major League Baseball team, will begin their 2020 regular season on March 26. For the more weather-privileged teams (see: San Diego, Los Angeles, Miami, Arizona) this will be a nice spring day of sunshine and light breezes. For the Mariners and other northern teams that are curiously starting their seasons at home (see: Cleveland, Cincinnati, the White Sox) rather than beginning in a southern city, or at least at a stadium with a roof, their home openers are going to be played in an icebox.
While these were much more low-stakes than what the Mariners are about to do, I have memories of playing Little League and club baseball in March and April.