Rangers have 87 wins. Yankees have 87 wins. Astros have 86. Angels have 85.

Scenario 1:
Rangers win. Yankees win.
Rangers get AL West. Yankees get 1st wild card. Astros get 2nd wildcard.

Scenario 2:
Rangers win. Yankees lose. Astros win.
Rangers get AL West. Yankees get 2nd wildcard. Astros get 1st.

Scenario 3:
Rangers lose. Yankees Win. Astros win.
Rangers and Astros play a one game playoff for AL West crown. Loser gets 2nd wildcard.

Scenario 4:
Rangers Lose. Yankees Lose. Astros Win.
Rangers and Astros play a one game playoff for AL West Crown. If the Astros lose, the get 1st wildcard. If Rangers lose they get 2nd wildcard. (Based on head to head with Yankees)

Scenario 5:
Rangers Lose. Yankees Lose. Astros Lose.
Rangers get AL West. Angels and Astros play one game playoff for second wild card.