<p>The final day of the 2021 <a href="https://theathletic.com/mlb/" target=" self">Major League Baseball</a> season comes with <a href="https://theathletic.com/news/al-wild-card-race-red-sox-yankees-tied-jays-mariners-1-back/wf2LIbT2eNeV" target=" self">major implications</a> for the <a href="https://theathletic.com/news/al-wild-card-race-red-sox-yankees-tied-in-wild-card-jays-mariners-1-back/wf2LIbT2eNeV#section1" target=" self">American League wild-card race</a> and for the National League West title. The <a href="https://theathletic.com/team/yankees/" target=" self">Yankees</a>, <a href="https://theathletic.com/team/redsox/" target=" self">Red Sox</a>, <a href="https://theathletic.com/team/jays/" target=" self">Blue Jays</a> and <a href="https://theathletic.com/team/mariners/"