Dylan Moore's first impression was disastrous. Telling, too. On March 30, 2019, the then-26-year-old prospect made his first career start as the Mariners hosted the Boston Red Sox. On an unseasonably warm Saturday in Seattle, Moore manned third base in front of 34,933 fans. It was an inauspicious start. Though Seattle earned a 6-5 win, nothing went right for the rookie, as Moore committed three errors and went 0 for 4 (striking out three times and grounding into a double play). He filled a bingo card with belly flops.