The Yankees and Mariners are no strangers to each other. There’s been a high amount of players to have played for both teams in recent years, whether that be from free agency moves (Robinson Cano), or trades between the teams (Ichiro Suzuki, Dustin Ackley, Ben Gamel, etc).
Now in 2018, both teams appear to be good. Anyone reading this is probably aware of what the Yankees have done this season, but the Mariners are right there too. Seattle is solidly in a Wild Card spot, and is only two games behind an Astros team that is on a 12-game winning streak.