Minnesota has clinched the AL Central last night. Houston's magic number for home field through out the playoffs is two over the Dodgers and one over the Yankees thanks to having tiebreakers over both teams.
Oakland and Tampa Bay are ahead for the two AL Wild Card spots with a the former a game ahead in the loss column for home field. Cleveland is still in the hunt, though it is hanging by a threat at 1.5 games out of contention. Since all three teams are in different divisions, a Game 163 will be necessary should two finish tied for the second Wild Card. If all three teams tie for the two Wild Card spots, there will be two tiebreaker games with the winner of one game playing the third the next day for the right to advance.
On the NL side of the bracket, the five teams in its playoffs are the Dodgers, Atlanta, St. Louis, Washington and Milwaukee. The Dodgers and Atlanta have clinched the #1 and #2 seeds respectively. Milwaukee could overtake St. Louis in the NL Central, but by losing the head-to-head record tiebreaker it would have to finish one game ahead in the standings.
If Washington finishes tied with St. Louis or Milwaukee, it would have to play the Wild Card game on the road due to having a losing head-to-head record against both teams.