Top 5 Home and Road Series on Mariners’ 2026 Schedule

The 2026 baseball season is upon us. The Mariners kick off the slate by welcoming the Cleveland Guardians to Seattle, starting Thursday. Opening Day is always a special time as the saying goes, “hope springs eternal.” For the Mariners, that’s especially true. It’s not very often that the Mariners open a season with the thought process of “World Series or bust.”

With that in mind, the Mariners will certainly clash with the best of the best MLB has to offer as they hope to be considered in that group themselves. Let’s take a look at the marquee series of the 2026 schedule, including the top five series at T-Mobile Park as well as the top five series on the road.

The top series could mean a combination of playing the best teams in the league but also key promotions or events surrounding that series.