Seattle has clinched first place.
They have won 91 games and will finish the season ahead of the following teams:

Houston has won 87 games and has 0 games left to play; they will finish the season with at most 87 wins.

Texas has won 81 games and has 0 games left to play; they will finish the season with at most 81 wins.

Oakland has won 76 games and has 0 games left to play; they will finish the season with at most 76 wins.

Los Angeles has won 72 games and has 0 games left to play; they will finish the season with at most 72 wins.
# Seattle Mariners' magic number
# Seattle's magic number
# Mariners' magic number
# MLB Playoff Race