On the Mariners April attendance
Mariners draw 500K+ in first month of 2026
Apr 22, 2026; Seattle, Washington, USA; Seattle Mariners catcher Cal Raleigh (29) celebrates outside the dugout after` hitting a solo-home run against the Athletics during the third inning at T-Mobile Park. Mandatory Credit: Joe Nicholson-Imagn Images | Joe Nicholson-Imagn Images The Mariners drew more fans in April than they have in than 20 years. T-Mobile Park hs hosted 539,263 fans so far in 2026.
That’s the second most in March and April in the history of the park, only bested by 619,771 fans in April 2002. The average attendance over 17 games (31,721 fans) is sixth most, behind all the years 2000-2004. Not that many fans showed up to Opening Day.
Well, it was essentially a sell out at 44,938 fans. But that’s actually the fourth fewest in the history of Opening Day at T-Mobile Park (though still a slosh higher than 42,871 on Opening Day last year). Why?
Probably because first pitch was at 7:10 p. m. on a Thursday against the Guardians with the temperature in the 40s.