The party is on for the Seattle Mariners after they clinched their spot in the playoffs with a 5-4 win over the Colorado Rockies on Tuesday, but an even bigger party may be just one night away.

They’re in! Seattle Mariners clinch spot in playoffs after Naylor’s double

Not only did the Mariners (88-69 record) win on Tuesday night, but the division rival Houston Astros (84-73) fell 5-1 to the Athletics in Sacramento .

That means the Mariners’ magic number to clinch their first American League West title since 2001 is just one. So with the next M’s win or Astros loss, either of which could come Wednesday, the division crown returns to Seattle after 24 years.

Seattle plays the second game of its three-game series against the MLB-worst Colorado Rockies at 6:40 p.m. Wednesday night, whil

See Full Page